/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:00:04,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:00:04,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:00:04,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:00:04,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:00:04,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:00:04,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:00:04,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:00:04,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:00:04,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:00:04,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:00:04,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:00:04,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:00:04,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:00:04,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:00:04,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:00:04,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:00:04,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:00:04,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:00:04,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:00:04,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:00:04,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:00:04,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:00:04,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:00:04,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:00:04,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-10 23:00:04,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-10 23:00:04,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-10 23:00:04,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-02-10 23:00:04,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:00:04,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:00:04,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:00:04,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:00:04,802 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:00:04,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:00:04,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:00:04,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:00:04,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:00:04,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:00:04,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:00:04,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:00:04,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:00:04,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:00:04,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:00:04,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:00:04,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:00:04,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:00:04,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:00:04,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:00:04,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:00:04,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:00:04,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:00:04,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:00:04,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:00:04,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:00:04,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:00:04,808 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:00:04,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:00:05,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:00:05,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:00:05,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:00:05,085 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:00:05,085 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:00:05,086 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2020-02-10 23:00:05,086 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2020-02-10 23:00:05,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:00:05,128 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:00:05,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:00:05,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:00:05,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:00:05,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:00:05,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:00:05,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:00:05,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:00:05,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:00:05,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:00:05,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:00:05,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:00:05,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:00:05,268 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:00:05,268 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:00:05,269 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:00:05,270 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:00:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:00:05,271 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:00:05,272 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:00:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:00:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:00:05,273 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 23:00:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 23:00:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 23:00:05,274 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:00:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:00:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:00:05,275 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:00:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:00:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:00:05,275 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 23:00:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 23:00:05,276 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 23:00:05,276 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-02-10 23:00:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-02-10 23:00:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-02-10 23:00:05,278 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 23:00:05,557 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:00:05,557 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:00:05,561 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:00:05 BoogieIcfgContainer [2020-02-10 23:00:05,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:00:05,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:00:05,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:00:05,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:00:05,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/2) ... [2020-02-10 23:00:05,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34437859 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:00:05, skipping insertion in model container [2020-02-10 23:00:05,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:00:05" (2/2) ... [2020-02-10 23:00:05,569 INFO L109 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2020-02-10 23:00:05,578 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:00:05,586 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:00:05,588 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:00:05,744 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-02-10 23:00:05,765 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:00:05,765 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:00:05,766 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:00:05,766 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:00:05,766 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:00:05,766 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:00:05,766 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:00:05,766 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:00:05,780 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions [2020-02-10 23:00:06,040 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2020-02-10 23:00:06,040 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-02-10 23:00:06,052 INFO L76 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1550 event pairs. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2020-02-10 23:00:06,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 80 transitions [2020-02-10 23:00:06,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 71 transitions [2020-02-10 23:00:06,072 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 71 transitions [2020-02-10 23:00:06,072 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 51 places, 71 transitions [2020-02-10 23:00:06,151 INFO L129 PetriNetUnfolder]: 321/470 cut-off events. [2020-02-10 23:00:06,152 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-02-10 23:00:06,157 INFO L76 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 470 events. 321/470 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1640 event pairs. 0/470 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2020-02-10 23:00:06,167 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 51 places, 71 transitions [2020-02-10 23:00:06,240 INFO L129 PetriNetUnfolder]: 321/470 cut-off events. [2020-02-10 23:00:06,240 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-02-10 23:00:06,245 INFO L76 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 470 events. 321/470 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1640 event pairs. 0/470 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2020-02-10 23:00:06,255 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-02-10 23:00:06,257 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-02-10 23:00:06,373 INFO L206 etLargeBlockEncoding]: Checked pairs total: 357 [2020-02-10 23:00:06,374 INFO L214 etLargeBlockEncoding]: Total number of compositions: 7 [2020-02-10 23:00:06,374 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 305 [2020-02-10 23:00:06,455 INFO L129 PetriNetUnfolder]: 321/462 cut-off events. [2020-02-10 23:00:06,455 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2020-02-10 23:00:06,455 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,456 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,457 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:06,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,464 INFO L82 PathProgramCache]: Analyzing trace with hash 877962276, now seen corresponding path program 1 times [2020-02-10 23:00:06,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689045898] [2020-02-10 23:00:06,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:06,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689045898] [2020-02-10 23:00:06,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:06,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46489967] [2020-02-10 23:00:06,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:06,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:06,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:06,728 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:00:06,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 64 transitions. Second operand 3 states. [2020-02-10 23:00:06,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:00:06,732 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,833 INFO L129 PetriNetUnfolder]: 285/420 cut-off events. [2020-02-10 23:00:06,833 INFO L130 PetriNetUnfolder]: For 541/541 co-relation queries the response was YES. [2020-02-10 23:00:06,837 INFO L76 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 420 events. 285/420 cut-off events. For 541/541 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1592 event pairs. 7/427 useless extension candidates. Maximal degree in co-relation 410. Up to 140 conditions per place. [2020-02-10 23:00:06,849 INFO L145 encePairwiseOnDemand]: 84/87 looper letters, 5 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2020-02-10 23:00:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2020-02-10 23:00:06,869 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2020-02-10 23:00:06,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2020-02-10 23:00:06,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2020-02-10 23:00:06,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2020-02-10 23:00:06,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:06,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:06,890 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:06,893 INFO L178 Difference]: Start difference. First operand has 44 places, 64 transitions. Second operand 3 states and 245 transitions. [2020-02-10 23:00:06,894 INFO L206 Difference]: Finished difference. Result has 46 places, 62 transitions [2020-02-10 23:00:06,899 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=46, PETRI_TRANSITIONS=62} [2020-02-10 23:00:06,900 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 46 places, 62 transitions [2020-02-10 23:00:06,963 INFO L129 PetriNetUnfolder]: 285/420 cut-off events. [2020-02-10 23:00:06,963 INFO L130 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2020-02-10 23:00:06,967 INFO L76 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 420 events. 285/420 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1407 event pairs. 0/420 useless extension candidates. Maximal degree in co-relation 830. Up to 140 conditions per place. [2020-02-10 23:00:06,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 62 transitions [2020-02-10 23:00:06,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 62 transitions [2020-02-10 23:00:06,976 INFO L479 AbstractCegarLoop]: Abstraction has has 46 places, 62 transitions [2020-02-10 23:00:06,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:07,042 INFO L129 PetriNetUnfolder]: 285/419 cut-off events. [2020-02-10 23:00:07,042 INFO L130 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2020-02-10 23:00:07,042 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,042 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,043 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,043 INFO L82 PathProgramCache]: Analyzing trace with hash 18681362, now seen corresponding path program 1 times [2020-02-10 23:00:07,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440355888] [2020-02-10 23:00:07,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440355888] [2020-02-10 23:00:07,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:07,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595717104] [2020-02-10 23:00:07,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:07,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:07,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:07,091 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:00:07,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 62 transitions. Second operand 3 states. [2020-02-10 23:00:07,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:00:07,092 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:07,152 INFO L129 PetriNetUnfolder]: 110/189 cut-off events. [2020-02-10 23:00:07,152 INFO L130 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2020-02-10 23:00:07,155 INFO L76 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 189 events. 110/189 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 640 event pairs. 51/240 useless extension candidates. Maximal degree in co-relation 376. Up to 60 conditions per place. [2020-02-10 23:00:07,160 INFO L145 encePairwiseOnDemand]: 81/87 looper letters, 2 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2020-02-10 23:00:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2020-02-10 23:00:07,168 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2020-02-10 23:00:07,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2020-02-10 23:00:07,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2020-02-10 23:00:07,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:07,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2020-02-10 23:00:07,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:07,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:07,184 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:07,185 INFO L178 Difference]: Start difference. First operand has 46 places, 62 transitions. Second operand 3 states and 245 transitions. [2020-02-10 23:00:07,187 INFO L206 Difference]: Finished difference. Result has 48 places, 57 transitions [2020-02-10 23:00:07,188 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=48, PETRI_TRANSITIONS=57} [2020-02-10 23:00:07,189 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 48 places, 57 transitions [2020-02-10 23:00:07,222 INFO L129 PetriNetUnfolder]: 110/189 cut-off events. [2020-02-10 23:00:07,222 INFO L130 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2020-02-10 23:00:07,224 INFO L76 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 189 events. 110/189 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 559 event pairs. 0/189 useless extension candidates. Maximal degree in co-relation 369. Up to 60 conditions per place. [2020-02-10 23:00:07,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 57 transitions [2020-02-10 23:00:07,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 57 transitions [2020-02-10 23:00:07,228 INFO L479 AbstractCegarLoop]: Abstraction has has 48 places, 57 transitions [2020-02-10 23:00:07,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:07,254 INFO L129 PetriNetUnfolder]: 110/188 cut-off events. [2020-02-10 23:00:07,254 INFO L130 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2020-02-10 23:00:07,255 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,255 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,255 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:07,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1803735002, now seen corresponding path program 1 times [2020-02-10 23:00:07,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307313646] [2020-02-10 23:00:07,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307313646] [2020-02-10 23:00:07,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:07,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302873358] [2020-02-10 23:00:07,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:07,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:07,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:07,299 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:00:07,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 57 transitions. Second operand 3 states. [2020-02-10 23:00:07,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:00:07,300 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:07,335 INFO L129 PetriNetUnfolder]: 64/128 cut-off events. [2020-02-10 23:00:07,336 INFO L130 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2020-02-10 23:00:07,337 INFO L76 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 128 events. 64/128 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 413 event pairs. 11/139 useless extension candidates. Maximal degree in co-relation 265. Up to 30 conditions per place. [2020-02-10 23:00:07,340 INFO L145 encePairwiseOnDemand]: 83/87 looper letters, 4 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2020-02-10 23:00:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2020-02-10 23:00:07,341 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2020-02-10 23:00:07,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2020-02-10 23:00:07,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2020-02-10 23:00:07,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:07,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2020-02-10 23:00:07,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:07,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:07,344 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:07,344 INFO L178 Difference]: Start difference. First operand has 48 places, 57 transitions. Second operand 3 states and 245 transitions. [2020-02-10 23:00:07,345 INFO L206 Difference]: Finished difference. Result has 50 places, 54 transitions [2020-02-10 23:00:07,346 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=50, PETRI_TRANSITIONS=54} [2020-02-10 23:00:07,346 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 50 places, 54 transitions [2020-02-10 23:00:07,360 INFO L129 PetriNetUnfolder]: 64/128 cut-off events. [2020-02-10 23:00:07,360 INFO L130 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2020-02-10 23:00:07,361 INFO L76 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 128 events. 64/128 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 359 event pairs. 0/128 useless extension candidates. Maximal degree in co-relation 248. Up to 30 conditions per place. [2020-02-10 23:00:07,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 54 transitions [2020-02-10 23:00:07,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 54 transitions [2020-02-10 23:00:07,364 INFO L479 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions [2020-02-10 23:00:07,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:07,378 INFO L129 PetriNetUnfolder]: 64/127 cut-off events. [2020-02-10 23:00:07,378 INFO L130 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2020-02-10 23:00:07,378 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,379 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,379 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:07,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1381444882, now seen corresponding path program 1 times [2020-02-10 23:00:07,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736854646] [2020-02-10 23:00:07,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736854646] [2020-02-10 23:00:07,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:07,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116884474] [2020-02-10 23:00:07,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:07,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:07,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:07,411 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:00:07,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions. Second operand 3 states. [2020-02-10 23:00:07,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:00:07,412 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:07,428 INFO L129 PetriNetUnfolder]: 12/45 cut-off events. [2020-02-10 23:00:07,428 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2020-02-10 23:00:07,429 INFO L76 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 45 events. 12/45 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs. 17/62 useless extension candidates. Maximal degree in co-relation 84. Up to 8 conditions per place. [2020-02-10 23:00:07,430 INFO L145 encePairwiseOnDemand]: 80/87 looper letters, 1 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2020-02-10 23:00:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:07,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2020-02-10 23:00:07,432 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2020-02-10 23:00:07,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2020-02-10 23:00:07,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2020-02-10 23:00:07,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:07,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2020-02-10 23:00:07,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:07,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:07,434 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:07,434 INFO L178 Difference]: Start difference. First operand has 50 places, 54 transitions. Second operand 3 states and 245 transitions. [2020-02-10 23:00:07,435 INFO L206 Difference]: Finished difference. Result has 52 places, 37 transitions [2020-02-10 23:00:07,435 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2020-02-10 23:00:07,435 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 52 places, 37 transitions [2020-02-10 23:00:07,441 INFO L129 PetriNetUnfolder]: 12/45 cut-off events. [2020-02-10 23:00:07,442 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-02-10 23:00:07,442 INFO L76 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 45 events. 12/45 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs. 0/45 useless extension candidates. Maximal degree in co-relation 83. Up to 8 conditions per place. [2020-02-10 23:00:07,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 37 transitions [2020-02-10 23:00:07,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 37 transitions [2020-02-10 23:00:07,444 INFO L479 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions [2020-02-10 23:00:07,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:07,449 INFO L129 PetriNetUnfolder]: 12/44 cut-off events. [2020-02-10 23:00:07,450 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-02-10 23:00:07,450 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,450 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,450 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2073555880, now seen corresponding path program 1 times [2020-02-10 23:00:07,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799737611] [2020-02-10 23:00:07,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799737611] [2020-02-10 23:00:07,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:07,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833422799] [2020-02-10 23:00:07,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:07,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:07,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:07,474 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:00:07,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions. Second operand 3 states. [2020-02-10 23:00:07,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:00:07,475 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:07,488 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2020-02-10 23:00:07,488 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2020-02-10 23:00:07,489 INFO L76 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 24 events. 1/24 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs. 5/29 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2020-02-10 23:00:07,490 INFO L145 encePairwiseOnDemand]: 82/87 looper letters, 1 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2020-02-10 23:00:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2020-02-10 23:00:07,492 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9310344827586207 [2020-02-10 23:00:07,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2020-02-10 23:00:07,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2020-02-10 23:00:07,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:07,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2020-02-10 23:00:07,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:07,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:07,494 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:07,494 INFO L178 Difference]: Start difference. First operand has 52 places, 37 transitions. Second operand 3 states and 243 transitions. [2020-02-10 23:00:07,494 INFO L206 Difference]: Finished difference. Result has 54 places, 24 transitions [2020-02-10 23:00:07,495 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=54, PETRI_TRANSITIONS=24} [2020-02-10 23:00:07,495 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 54 places, 24 transitions [2020-02-10 23:00:07,499 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2020-02-10 23:00:07,499 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-02-10 23:00:07,500 INFO L76 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 24 events. 1/24 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs. 0/24 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2020-02-10 23:00:07,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 24 transitions [2020-02-10 23:00:07,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 24 transitions [2020-02-10 23:00:07,501 INFO L479 AbstractCegarLoop]: Abstraction has has 54 places, 24 transitions [2020-02-10 23:00:07,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:07,505 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2020-02-10 23:00:07,506 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-02-10 23:00:07,506 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,506 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:07,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,506 INFO L82 PathProgramCache]: Analyzing trace with hash 532592596, now seen corresponding path program 1 times [2020-02-10 23:00:07,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342754321] [2020-02-10 23:00:07,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:08,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342754321] [2020-02-10 23:00:08,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:08,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:08,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472942783] [2020-02-10 23:00:08,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:08,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:08,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:08,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:08,109 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:08,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 24 transitions. Second operand 9 states. [2020-02-10 23:00:08,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:08,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:08,111 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:08,407 INFO L129 PetriNetUnfolder]: 396/664 cut-off events. [2020-02-10 23:00:08,408 INFO L130 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2020-02-10 23:00:08,413 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 664 events. 396/664 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3040 event pairs. 1/614 useless extension candidates. Maximal degree in co-relation 1330. Up to 225 conditions per place. [2020-02-10 23:00:08,425 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 27 selfloop transitions, 6 changer transitions 1/50 dead transitions. [2020-02-10 23:00:08,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:08,430 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:08,430 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:08,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:08,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:08,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:08,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:08,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:08,436 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:08,436 INFO L178 Difference]: Start difference. First operand has 54 places, 24 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:08,438 INFO L206 Difference]: Finished difference. Result has 69 places, 29 transitions [2020-02-10 23:00:08,438 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=153, PETRI_PLACES=69, PETRI_TRANSITIONS=29} [2020-02-10 23:00:08,438 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 69 places, 29 transitions [2020-02-10 23:00:08,451 INFO L129 PetriNetUnfolder]: 4/69 cut-off events. [2020-02-10 23:00:08,452 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2020-02-10 23:00:08,453 INFO L76 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 69 events. 4/69 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs. 0/61 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2020-02-10 23:00:08,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 29 transitions [2020-02-10 23:00:08,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 29 transitions [2020-02-10 23:00:08,455 INFO L479 AbstractCegarLoop]: Abstraction has has 68 places, 29 transitions [2020-02-10 23:00:08,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:08,467 INFO L129 PetriNetUnfolder]: 4/63 cut-off events. [2020-02-10 23:00:08,467 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2020-02-10 23:00:08,467 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:08,468 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:08,468 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash -835433964, now seen corresponding path program 2 times [2020-02-10 23:00:08,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:08,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371775457] [2020-02-10 23:00:08,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:08,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371775457] [2020-02-10 23:00:08,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:08,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:08,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400043680] [2020-02-10 23:00:08,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:08,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:08,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:08,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:08,931 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:08,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 29 transitions. Second operand 9 states. [2020-02-10 23:00:08,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:08,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:08,932 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:09,459 INFO L129 PetriNetUnfolder]: 488/1097 cut-off events. [2020-02-10 23:00:09,459 INFO L130 PetriNetUnfolder]: For 1358/1379 co-relation queries the response was YES. [2020-02-10 23:00:09,469 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 1097 events. 488/1097 cut-off events. For 1358/1379 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7446 event pairs. 1/1044 useless extension candidates. Maximal degree in co-relation 3057. Up to 304 conditions per place. [2020-02-10 23:00:09,491 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 39 selfloop transitions, 10 changer transitions 1/66 dead transitions. [2020-02-10 23:00:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:09,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:09,494 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:09,495 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:09,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:09,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:09,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:09,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:09,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:09,500 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:09,500 INFO L178 Difference]: Start difference. First operand has 68 places, 29 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:09,501 INFO L206 Difference]: Finished difference. Result has 83 places, 37 transitions [2020-02-10 23:00:09,501 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=250, PETRI_PLACES=83, PETRI_TRANSITIONS=37} [2020-02-10 23:00:09,501 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 37 transitions [2020-02-10 23:00:09,564 INFO L129 PetriNetUnfolder]: 16/258 cut-off events. [2020-02-10 23:00:09,564 INFO L130 PetriNetUnfolder]: For 374/377 co-relation queries the response was YES. [2020-02-10 23:00:09,567 INFO L76 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 258 events. 16/258 cut-off events. For 374/377 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1924 event pairs. 0/229 useless extension candidates. Maximal degree in co-relation 652. Up to 32 conditions per place. [2020-02-10 23:00:09,567 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 37 transitions [2020-02-10 23:00:09,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 37 transitions [2020-02-10 23:00:09,575 INFO L479 AbstractCegarLoop]: Abstraction has has 82 places, 37 transitions [2020-02-10 23:00:09,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:09,641 INFO L129 PetriNetUnfolder]: 16/232 cut-off events. [2020-02-10 23:00:09,642 INFO L130 PetriNetUnfolder]: For 374/376 co-relation queries the response was YES. [2020-02-10 23:00:09,642 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:09,642 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:09,643 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:09,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:09,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2140479536, now seen corresponding path program 3 times [2020-02-10 23:00:09,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:09,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929848965] [2020-02-10 23:00:09,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:10,051 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2020-02-10 23:00:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:10,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929848965] [2020-02-10 23:00:10,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:10,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:10,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994806805] [2020-02-10 23:00:10,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:10,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:10,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:10,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:10,165 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:10,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 37 transitions. Second operand 9 states. [2020-02-10 23:00:10,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:10,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:10,166 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:10,749 INFO L129 PetriNetUnfolder]: 477/1040 cut-off events. [2020-02-10 23:00:10,749 INFO L130 PetriNetUnfolder]: For 3187/3216 co-relation queries the response was YES. [2020-02-10 23:00:10,760 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 1040 events. 477/1040 cut-off events. For 3187/3216 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6681 event pairs. 1/981 useless extension candidates. Maximal degree in co-relation 3787. Up to 294 conditions per place. [2020-02-10 23:00:10,784 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 46 selfloop transitions, 8 changer transitions 1/71 dead transitions. [2020-02-10 23:00:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:10,787 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:10,788 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:10,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:10,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:10,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:10,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:10,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:10,791 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:10,792 INFO L178 Difference]: Start difference. First operand has 82 places, 37 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:10,792 INFO L206 Difference]: Finished difference. Result has 95 places, 40 transitions [2020-02-10 23:00:10,792 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=95, PETRI_TRANSITIONS=40} [2020-02-10 23:00:10,793 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 40 transitions [2020-02-10 23:00:10,848 INFO L129 PetriNetUnfolder]: 17/280 cut-off events. [2020-02-10 23:00:10,848 INFO L130 PetriNetUnfolder]: For 599/603 co-relation queries the response was YES. [2020-02-10 23:00:10,851 INFO L76 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 280 events. 17/280 cut-off events. For 599/603 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2164 event pairs. 0/249 useless extension candidates. Maximal degree in co-relation 790. Up to 34 conditions per place. [2020-02-10 23:00:10,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 40 transitions [2020-02-10 23:00:10,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 40 transitions [2020-02-10 23:00:10,877 INFO L479 AbstractCegarLoop]: Abstraction has has 94 places, 40 transitions [2020-02-10 23:00:10,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:10,927 INFO L129 PetriNetUnfolder]: 17/252 cut-off events. [2020-02-10 23:00:10,928 INFO L130 PetriNetUnfolder]: For 599/603 co-relation queries the response was YES. [2020-02-10 23:00:10,928 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:10,928 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:10,928 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:10,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:10,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1067394156, now seen corresponding path program 4 times [2020-02-10 23:00:10,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:10,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562007011] [2020-02-10 23:00:10,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:11,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562007011] [2020-02-10 23:00:11,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:11,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:11,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284872099] [2020-02-10 23:00:11,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:11,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:11,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:11,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:11,358 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:11,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 40 transitions. Second operand 9 states. [2020-02-10 23:00:11,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:11,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:11,359 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:11,997 INFO L129 PetriNetUnfolder]: 476/1050 cut-off events. [2020-02-10 23:00:11,997 INFO L130 PetriNetUnfolder]: For 4025/4054 co-relation queries the response was YES. [2020-02-10 23:00:12,008 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4140 conditions, 1050 events. 476/1050 cut-off events. For 4025/4054 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6792 event pairs. 1/991 useless extension candidates. Maximal degree in co-relation 4094. Up to 294 conditions per place. [2020-02-10 23:00:12,042 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 45 selfloop transitions, 9 changer transitions 1/71 dead transitions. [2020-02-10 23:00:12,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:12,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:12,045 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:12,045 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:12,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:12,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:12,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:12,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:12,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:12,049 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:12,049 INFO L178 Difference]: Start difference. First operand has 94 places, 40 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:12,050 INFO L206 Difference]: Finished difference. Result has 105 places, 42 transitions [2020-02-10 23:00:12,050 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=357, PETRI_PLACES=105, PETRI_TRANSITIONS=42} [2020-02-10 23:00:12,050 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 105 places, 42 transitions [2020-02-10 23:00:12,109 INFO L129 PetriNetUnfolder]: 18/294 cut-off events. [2020-02-10 23:00:12,110 INFO L130 PetriNetUnfolder]: For 834/836 co-relation queries the response was YES. [2020-02-10 23:00:12,113 INFO L76 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 294 events. 18/294 cut-off events. For 834/836 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2305 event pairs. 0/262 useless extension candidates. Maximal degree in co-relation 898. Up to 36 conditions per place. [2020-02-10 23:00:12,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 42 transitions [2020-02-10 23:00:12,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 42 transitions [2020-02-10 23:00:12,120 INFO L479 AbstractCegarLoop]: Abstraction has has 104 places, 42 transitions [2020-02-10 23:00:12,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:12,167 INFO L129 PetriNetUnfolder]: 18/265 cut-off events. [2020-02-10 23:00:12,167 INFO L130 PetriNetUnfolder]: For 834/836 co-relation queries the response was YES. [2020-02-10 23:00:12,167 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:12,167 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:12,168 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:12,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:12,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1014878636, now seen corresponding path program 5 times [2020-02-10 23:00:12,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:12,169 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291536436] [2020-02-10 23:00:12,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:12,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291536436] [2020-02-10 23:00:12,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:12,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:12,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879778204] [2020-02-10 23:00:12,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:12,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:12,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:12,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:12,537 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:12,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 42 transitions. Second operand 9 states. [2020-02-10 23:00:12,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:12,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:12,538 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:13,070 INFO L129 PetriNetUnfolder]: 475/1040 cut-off events. [2020-02-10 23:00:13,070 INFO L130 PetriNetUnfolder]: For 5085/5114 co-relation queries the response was YES. [2020-02-10 23:00:13,085 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4459 conditions, 1040 events. 475/1040 cut-off events. For 5085/5114 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6716 event pairs. 1/981 useless extension candidates. Maximal degree in co-relation 4409. Up to 294 conditions per place. [2020-02-10 23:00:13,108 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 43 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2020-02-10 23:00:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:13,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:13,111 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:13,111 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:13,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:13,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:13,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:13,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:13,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:13,115 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:13,115 INFO L178 Difference]: Start difference. First operand has 104 places, 42 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:13,116 INFO L206 Difference]: Finished difference. Result has 115 places, 44 transitions [2020-02-10 23:00:13,116 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=416, PETRI_PLACES=115, PETRI_TRANSITIONS=44} [2020-02-10 23:00:13,117 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 115 places, 44 transitions [2020-02-10 23:00:13,168 INFO L129 PetriNetUnfolder]: 18/293 cut-off events. [2020-02-10 23:00:13,168 INFO L130 PetriNetUnfolder]: For 1095/1097 co-relation queries the response was YES. [2020-02-10 23:00:13,172 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 293 events. 18/293 cut-off events. For 1095/1097 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2310 event pairs. 0/260 useless extension candidates. Maximal degree in co-relation 969. Up to 36 conditions per place. [2020-02-10 23:00:13,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 44 transitions [2020-02-10 23:00:13,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 44 transitions [2020-02-10 23:00:13,179 INFO L479 AbstractCegarLoop]: Abstraction has has 115 places, 44 transitions [2020-02-10 23:00:13,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:13,222 INFO L129 PetriNetUnfolder]: 18/265 cut-off events. [2020-02-10 23:00:13,223 INFO L130 PetriNetUnfolder]: For 1095/1098 co-relation queries the response was YES. [2020-02-10 23:00:13,223 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:13,223 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:13,223 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:13,224 INFO L82 PathProgramCache]: Analyzing trace with hash 387127030, now seen corresponding path program 6 times [2020-02-10 23:00:13,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:13,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60126218] [2020-02-10 23:00:13,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:13,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60126218] [2020-02-10 23:00:13,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:13,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:13,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737305169] [2020-02-10 23:00:13,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:13,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:13,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:13,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:13,609 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:13,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 44 transitions. Second operand 9 states. [2020-02-10 23:00:13,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:13,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:13,610 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:14,329 INFO L129 PetriNetUnfolder]: 482/1144 cut-off events. [2020-02-10 23:00:14,329 INFO L130 PetriNetUnfolder]: For 6844/6873 co-relation queries the response was YES. [2020-02-10 23:00:14,351 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 1144 events. 482/1144 cut-off events. For 6844/6873 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8125 event pairs. 1/1091 useless extension candidates. Maximal degree in co-relation 4916. Up to 304 conditions per place. [2020-02-10 23:00:14,385 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 40 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2020-02-10 23:00:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:14,388 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:14,389 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:14,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:14,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:14,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:14,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:14,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:14,393 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:14,393 INFO L178 Difference]: Start difference. First operand has 115 places, 44 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:14,396 INFO L206 Difference]: Finished difference. Result has 127 places, 49 transitions [2020-02-10 23:00:14,397 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=530, PETRI_PLACES=127, PETRI_TRANSITIONS=49} [2020-02-10 23:00:14,397 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 127 places, 49 transitions [2020-02-10 23:00:14,487 INFO L129 PetriNetUnfolder]: 22/347 cut-off events. [2020-02-10 23:00:14,487 INFO L130 PetriNetUnfolder]: For 1675/1689 co-relation queries the response was YES. [2020-02-10 23:00:14,494 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 347 events. 22/347 cut-off events. For 1675/1689 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2933 event pairs. 0/310 useless extension candidates. Maximal degree in co-relation 1235. Up to 44 conditions per place. [2020-02-10 23:00:14,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 49 transitions [2020-02-10 23:00:14,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 49 transitions [2020-02-10 23:00:14,505 INFO L479 AbstractCegarLoop]: Abstraction has has 127 places, 49 transitions [2020-02-10 23:00:14,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:14,570 INFO L129 PetriNetUnfolder]: 22/315 cut-off events. [2020-02-10 23:00:14,570 INFO L130 PetriNetUnfolder]: For 1675/1689 co-relation queries the response was YES. [2020-02-10 23:00:14,570 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:14,570 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:14,570 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:14,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:14,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1831706986, now seen corresponding path program 7 times [2020-02-10 23:00:14,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:14,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968976470] [2020-02-10 23:00:14,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:14,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968976470] [2020-02-10 23:00:14,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:14,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:14,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760124160] [2020-02-10 23:00:14,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:14,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:14,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:14,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:14,964 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:14,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 49 transitions. Second operand 9 states. [2020-02-10 23:00:14,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:14,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:14,965 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:16,405 INFO L129 PetriNetUnfolder]: 643/1930 cut-off events. [2020-02-10 23:00:16,405 INFO L130 PetriNetUnfolder]: For 13143/13176 co-relation queries the response was YES. [2020-02-10 23:00:16,427 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7878 conditions, 1930 events. 643/1930 cut-off events. For 13143/13176 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 18431 event pairs. 1/1859 useless extension candidates. Maximal degree in co-relation 7819. Up to 389 conditions per place. [2020-02-10 23:00:16,468 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 55 selfloop transitions, 22 changer transitions 2/95 dead transitions. [2020-02-10 23:00:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:16,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:16,471 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:16,471 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:16,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:16,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:16,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:16,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:16,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:16,475 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:16,475 INFO L178 Difference]: Start difference. First operand has 127 places, 49 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:16,476 INFO L206 Difference]: Finished difference. Result has 142 places, 59 transitions [2020-02-10 23:00:16,476 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=754, PETRI_PLACES=142, PETRI_TRANSITIONS=59} [2020-02-10 23:00:16,476 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 142 places, 59 transitions [2020-02-10 23:00:16,613 INFO L129 PetriNetUnfolder]: 28/528 cut-off events. [2020-02-10 23:00:16,614 INFO L130 PetriNetUnfolder]: For 3610/3705 co-relation queries the response was YES. [2020-02-10 23:00:16,621 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 528 events. 28/528 cut-off events. For 3610/3705 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5211 event pairs. 0/466 useless extension candidates. Maximal degree in co-relation 2069. Up to 61 conditions per place. [2020-02-10 23:00:16,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 59 transitions [2020-02-10 23:00:16,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 59 transitions [2020-02-10 23:00:16,635 INFO L479 AbstractCegarLoop]: Abstraction has has 141 places, 59 transitions [2020-02-10 23:00:16,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:16,706 INFO L129 PetriNetUnfolder]: 28/470 cut-off events. [2020-02-10 23:00:16,706 INFO L130 PetriNetUnfolder]: For 3610/3705 co-relation queries the response was YES. [2020-02-10 23:00:16,706 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:16,707 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:16,707 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:16,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:16,707 INFO L82 PathProgramCache]: Analyzing trace with hash -903855960, now seen corresponding path program 8 times [2020-02-10 23:00:16,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:16,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012096154] [2020-02-10 23:00:16,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:17,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012096154] [2020-02-10 23:00:17,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:17,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:17,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841562661] [2020-02-10 23:00:17,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:17,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:17,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:17,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:17,047 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:17,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 59 transitions. Second operand 9 states. [2020-02-10 23:00:17,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:17,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:17,048 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:18,340 INFO L129 PetriNetUnfolder]: 722/2381 cut-off events. [2020-02-10 23:00:18,340 INFO L130 PetriNetUnfolder]: For 23275/23310 co-relation queries the response was YES. [2020-02-10 23:00:18,359 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11526 conditions, 2381 events. 722/2381 cut-off events. For 23275/23310 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 24217 event pairs. 1/2295 useless extension candidates. Maximal degree in co-relation 11459. Up to 612 conditions per place. [2020-02-10 23:00:18,414 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 73 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2020-02-10 23:00:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:18,417 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:18,417 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:18,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:18,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:18,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:18,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:18,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:18,421 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:18,421 INFO L178 Difference]: Start difference. First operand has 141 places, 59 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:18,422 INFO L206 Difference]: Finished difference. Result has 156 places, 71 transitions [2020-02-10 23:00:18,422 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1068, PETRI_PLACES=156, PETRI_TRANSITIONS=71} [2020-02-10 23:00:18,423 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 156 places, 71 transitions [2020-02-10 23:00:18,701 INFO L129 PetriNetUnfolder]: 50/960 cut-off events. [2020-02-10 23:00:18,701 INFO L130 PetriNetUnfolder]: For 8353/8445 co-relation queries the response was YES. [2020-02-10 23:00:18,711 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4137 conditions, 960 events. 50/960 cut-off events. For 8353/8445 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11132 event pairs. 2/865 useless extension candidates. Maximal degree in co-relation 4063. Up to 106 conditions per place. [2020-02-10 23:00:18,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 71 transitions [2020-02-10 23:00:18,738 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 71 transitions [2020-02-10 23:00:18,738 INFO L479 AbstractCegarLoop]: Abstraction has has 156 places, 71 transitions [2020-02-10 23:00:18,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:18,962 INFO L129 PetriNetUnfolder]: 50/858 cut-off events. [2020-02-10 23:00:18,962 INFO L130 PetriNetUnfolder]: For 8459/8567 co-relation queries the response was YES. [2020-02-10 23:00:18,962 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:18,962 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:18,962 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:18,963 INFO L82 PathProgramCache]: Analyzing trace with hash 305871822, now seen corresponding path program 9 times [2020-02-10 23:00:18,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:18,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654667246] [2020-02-10 23:00:18,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:19,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654667246] [2020-02-10 23:00:19,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:19,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:19,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380711662] [2020-02-10 23:00:19,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:19,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:19,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:19,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:19,298 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:19,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 71 transitions. Second operand 9 states. [2020-02-10 23:00:19,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:19,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:19,299 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:20,796 INFO L129 PetriNetUnfolder]: 691/2466 cut-off events. [2020-02-10 23:00:20,796 INFO L130 PetriNetUnfolder]: For 33129/33294 co-relation queries the response was YES. [2020-02-10 23:00:20,819 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13397 conditions, 2466 events. 691/2466 cut-off events. For 33129/33294 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25731 event pairs. 3/2371 useless extension candidates. Maximal degree in co-relation 13322. Up to 612 conditions per place. [2020-02-10 23:00:20,880 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 83 selfloop transitions, 23 changer transitions 0/122 dead transitions. [2020-02-10 23:00:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:20,883 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:20,883 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:20,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:20,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:20,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:20,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:20,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:20,888 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:20,888 INFO L178 Difference]: Start difference. First operand has 156 places, 71 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:20,889 INFO L206 Difference]: Finished difference. Result has 170 places, 80 transitions [2020-02-10 23:00:20,890 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1337, PETRI_PLACES=170, PETRI_TRANSITIONS=80} [2020-02-10 23:00:20,890 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 170 places, 80 transitions [2020-02-10 23:00:21,277 INFO L129 PetriNetUnfolder]: 60/1244 cut-off events. [2020-02-10 23:00:21,278 INFO L130 PetriNetUnfolder]: For 14032/14146 co-relation queries the response was YES. [2020-02-10 23:00:21,291 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5794 conditions, 1244 events. 60/1244 cut-off events. For 14032/14146 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15445 event pairs. 6/1125 useless extension candidates. Maximal degree in co-relation 5713. Up to 137 conditions per place. [2020-02-10 23:00:21,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 80 transitions [2020-02-10 23:00:21,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 80 transitions [2020-02-10 23:00:21,315 INFO L479 AbstractCegarLoop]: Abstraction has has 170 places, 80 transitions [2020-02-10 23:00:21,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:21,553 INFO L129 PetriNetUnfolder]: 60/1112 cut-off events. [2020-02-10 23:00:21,553 INFO L130 PetriNetUnfolder]: For 13924/14036 co-relation queries the response was YES. [2020-02-10 23:00:21,553 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:21,553 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:21,554 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:21,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1336521022, now seen corresponding path program 10 times [2020-02-10 23:00:21,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:21,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959282756] [2020-02-10 23:00:21,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:21,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959282756] [2020-02-10 23:00:21,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:21,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:21,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028226457] [2020-02-10 23:00:21,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:21,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:21,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:21,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:21,908 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:21,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 80 transitions. Second operand 9 states. [2020-02-10 23:00:21,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:21,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:21,909 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:23,668 INFO L129 PetriNetUnfolder]: 743/2711 cut-off events. [2020-02-10 23:00:23,668 INFO L130 PetriNetUnfolder]: For 39248/39599 co-relation queries the response was YES. [2020-02-10 23:00:23,696 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14571 conditions, 2711 events. 743/2711 cut-off events. For 39248/39599 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 29078 event pairs. 1/2614 useless extension candidates. Maximal degree in co-relation 14489. Up to 720 conditions per place. [2020-02-10 23:00:23,743 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 81 selfloop transitions, 28 changer transitions 0/125 dead transitions. [2020-02-10 23:00:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:23,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:23,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:23,745 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:23,745 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:23,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:23,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:23,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:23,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:23,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:23,750 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:23,750 INFO L178 Difference]: Start difference. First operand has 170 places, 80 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:23,751 INFO L206 Difference]: Finished difference. Result has 185 places, 90 transitions [2020-02-10 23:00:23,752 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1636, PETRI_PLACES=185, PETRI_TRANSITIONS=90} [2020-02-10 23:00:23,752 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 185 places, 90 transitions [2020-02-10 23:00:24,174 INFO L129 PetriNetUnfolder]: 60/1243 cut-off events. [2020-02-10 23:00:24,174 INFO L130 PetriNetUnfolder]: For 16679/16805 co-relation queries the response was YES. [2020-02-10 23:00:24,189 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6121 conditions, 1243 events. 60/1243 cut-off events. For 16679/16805 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15431 event pairs. 7/1126 useless extension candidates. Maximal degree in co-relation 6032. Up to 137 conditions per place. [2020-02-10 23:00:24,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 90 transitions [2020-02-10 23:00:24,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 90 transitions [2020-02-10 23:00:24,214 INFO L479 AbstractCegarLoop]: Abstraction has has 185 places, 90 transitions [2020-02-10 23:00:24,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:24,497 INFO L129 PetriNetUnfolder]: 60/1112 cut-off events. [2020-02-10 23:00:24,497 INFO L130 PetriNetUnfolder]: For 16741/16874 co-relation queries the response was YES. [2020-02-10 23:00:24,497 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:24,497 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:24,497 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:24,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:24,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1573740422, now seen corresponding path program 11 times [2020-02-10 23:00:24,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:24,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135993134] [2020-02-10 23:00:24,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:24,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135993134] [2020-02-10 23:00:24,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:24,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:24,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772168138] [2020-02-10 23:00:24,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:24,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:24,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:24,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:24,905 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:24,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 90 transitions. Second operand 9 states. [2020-02-10 23:00:24,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:24,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:24,906 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:26,858 INFO L129 PetriNetUnfolder]: 704/2559 cut-off events. [2020-02-10 23:00:26,858 INFO L130 PetriNetUnfolder]: For 47039/47754 co-relation queries the response was YES. [2020-02-10 23:00:26,887 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15147 conditions, 2559 events. 704/2559 cut-off events. For 47039/47754 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 27019 event pairs. 1/2461 useless extension candidates. Maximal degree in co-relation 15057. Up to 567 conditions per place. [2020-02-10 23:00:26,936 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 85 selfloop transitions, 37 changer transitions 0/138 dead transitions. [2020-02-10 23:00:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:26,939 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:26,939 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:26,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:26,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:26,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:26,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:26,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:26,943 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:26,943 INFO L178 Difference]: Start difference. First operand has 185 places, 90 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:26,945 INFO L206 Difference]: Finished difference. Result has 197 places, 98 transitions [2020-02-10 23:00:26,945 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1919, PETRI_PLACES=197, PETRI_TRANSITIONS=98} [2020-02-10 23:00:26,945 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 197 places, 98 transitions [2020-02-10 23:00:27,460 INFO L129 PetriNetUnfolder]: 64/1293 cut-off events. [2020-02-10 23:00:27,460 INFO L130 PetriNetUnfolder]: For 20311/20452 co-relation queries the response was YES. [2020-02-10 23:00:27,477 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6671 conditions, 1293 events. 64/1293 cut-off events. For 20311/20452 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16141 event pairs. 6/1178 useless extension candidates. Maximal degree in co-relation 6577. Up to 141 conditions per place. [2020-02-10 23:00:27,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 98 transitions [2020-02-10 23:00:27,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 98 transitions [2020-02-10 23:00:27,503 INFO L479 AbstractCegarLoop]: Abstraction has has 197 places, 98 transitions [2020-02-10 23:00:27,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:27,782 INFO L129 PetriNetUnfolder]: 64/1159 cut-off events. [2020-02-10 23:00:27,782 INFO L130 PetriNetUnfolder]: For 20334/20477 co-relation queries the response was YES. [2020-02-10 23:00:27,782 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:27,783 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:27,783 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:27,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:27,783 INFO L82 PathProgramCache]: Analyzing trace with hash -2023987124, now seen corresponding path program 1 times [2020-02-10 23:00:27,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:27,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151821134] [2020-02-10 23:00:27,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:27,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151821134] [2020-02-10 23:00:27,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:27,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:27,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029405877] [2020-02-10 23:00:27,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:27,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:27,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:27,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:27,812 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2020-02-10 23:00:27,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 98 transitions. Second operand 3 states. [2020-02-10 23:00:27,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:27,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2020-02-10 23:00:27,812 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:28,366 INFO L129 PetriNetUnfolder]: 0/1201 cut-off events. [2020-02-10 23:00:28,366 INFO L130 PetriNetUnfolder]: For 20321/20454 co-relation queries the response was YES. [2020-02-10 23:00:28,379 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6553 conditions, 1201 events. 0/1201 cut-off events. For 20321/20454 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15347 event pairs. 32/1099 useless extension candidates. Maximal degree in co-relation 6457. Up to 141 conditions per place. [2020-02-10 23:00:28,400 INFO L145 encePairwiseOnDemand]: 85/87 looper letters, 1 selfloop transitions, 1 changer transitions 2/96 dead transitions. [2020-02-10 23:00:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2020-02-10 23:00:28,401 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9195402298850575 [2020-02-10 23:00:28,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2020-02-10 23:00:28,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2020-02-10 23:00:28,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:28,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2020-02-10 23:00:28,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:28,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:28,403 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:28,403 INFO L178 Difference]: Start difference. First operand has 197 places, 98 transitions. Second operand 3 states and 240 transitions. [2020-02-10 23:00:28,404 INFO L206 Difference]: Finished difference. Result has 199 places, 94 transitions [2020-02-10 23:00:28,405 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1853, PETRI_PLACES=199, PETRI_TRANSITIONS=94} [2020-02-10 23:00:28,405 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 199 places, 94 transitions [2020-02-10 23:00:28,849 INFO L129 PetriNetUnfolder]: 0/1190 cut-off events. [2020-02-10 23:00:28,850 INFO L130 PetriNetUnfolder]: For 20028/20166 co-relation queries the response was YES. [2020-02-10 23:00:28,864 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 1190 events. 0/1190 cut-off events. For 20028/20166 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15263 event pairs. 7/1078 useless extension candidates. Maximal degree in co-relation 6352. Up to 139 conditions per place. [2020-02-10 23:00:28,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 94 transitions [2020-02-10 23:00:28,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 94 transitions [2020-02-10 23:00:28,887 INFO L479 AbstractCegarLoop]: Abstraction has has 197 places, 94 transitions [2020-02-10 23:00:28,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:29,138 INFO L129 PetriNetUnfolder]: 0/1056 cut-off events. [2020-02-10 23:00:29,139 INFO L130 PetriNetUnfolder]: For 20028/20166 co-relation queries the response was YES. [2020-02-10 23:00:29,139 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:29,139 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:29,139 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:29,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1358008420, now seen corresponding path program 12 times [2020-02-10 23:00:29,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:29,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461464253] [2020-02-10 23:00:29,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:29,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461464253] [2020-02-10 23:00:29,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:29,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:29,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003881235] [2020-02-10 23:00:29,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:29,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:29,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:29,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:29,469 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:29,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 94 transitions. Second operand 9 states. [2020-02-10 23:00:29,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:29,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:29,470 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:31,488 INFO L129 PetriNetUnfolder]: 578/2446 cut-off events. [2020-02-10 23:00:31,489 INFO L130 PetriNetUnfolder]: For 53186/53901 co-relation queries the response was YES. [2020-02-10 23:00:31,519 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15573 conditions, 2446 events. 578/2446 cut-off events. For 53186/53901 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26592 event pairs. 1/2357 useless extension candidates. Maximal degree in co-relation 15480. Up to 720 conditions per place. [2020-02-10 23:00:31,569 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 86 selfloop transitions, 32 changer transitions 0/132 dead transitions. [2020-02-10 23:00:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:31,570 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:31,571 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:31,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:31,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:31,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:31,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:31,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:31,574 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:31,574 INFO L178 Difference]: Start difference. First operand has 197 places, 94 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:31,575 INFO L206 Difference]: Finished difference. Result has 209 places, 98 transitions [2020-02-10 23:00:31,576 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2017, PETRI_PLACES=209, PETRI_TRANSITIONS=98} [2020-02-10 23:00:31,576 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 209 places, 98 transitions [2020-02-10 23:00:32,064 INFO L129 PetriNetUnfolder]: 0/1196 cut-off events. [2020-02-10 23:00:32,064 INFO L130 PetriNetUnfolder]: For 22618/22764 co-relation queries the response was YES. [2020-02-10 23:00:32,079 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6744 conditions, 1196 events. 0/1196 cut-off events. For 22618/22764 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15345 event pairs. 7/1083 useless extension candidates. Maximal degree in co-relation 6647. Up to 140 conditions per place. [2020-02-10 23:00:32,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 98 transitions [2020-02-10 23:00:32,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 98 transitions [2020-02-10 23:00:32,114 INFO L479 AbstractCegarLoop]: Abstraction has has 209 places, 98 transitions [2020-02-10 23:00:32,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:32,402 INFO L129 PetriNetUnfolder]: 0/1062 cut-off events. [2020-02-10 23:00:32,402 INFO L130 PetriNetUnfolder]: For 22728/22883 co-relation queries the response was YES. [2020-02-10 23:00:32,402 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:32,402 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:32,403 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:32,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:32,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1634440310, now seen corresponding path program 13 times [2020-02-10 23:00:32,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:32,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366542771] [2020-02-10 23:00:32,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:32,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366542771] [2020-02-10 23:00:32,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:32,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:32,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069780004] [2020-02-10 23:00:32,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:32,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:32,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:32,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:32,777 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:32,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 98 transitions. Second operand 9 states. [2020-02-10 23:00:32,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:32,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:32,778 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:35,181 INFO L129 PetriNetUnfolder]: 572/2488 cut-off events. [2020-02-10 23:00:35,181 INFO L130 PetriNetUnfolder]: For 61557/62249 co-relation queries the response was YES. [2020-02-10 23:00:35,209 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16778 conditions, 2488 events. 572/2488 cut-off events. For 61557/62249 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 27498 event pairs. 1/2402 useless extension candidates. Maximal degree in co-relation 16680. Up to 567 conditions per place. [2020-02-10 23:00:35,257 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 98 selfloop transitions, 35 changer transitions 1/148 dead transitions. [2020-02-10 23:00:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:35,260 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:35,260 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:35,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:35,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:35,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:35,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:35,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:35,263 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:35,263 INFO L178 Difference]: Start difference. First operand has 209 places, 98 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:35,265 INFO L206 Difference]: Finished difference. Result has 222 places, 103 transitions [2020-02-10 23:00:35,265 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=222, PETRI_TRANSITIONS=103} [2020-02-10 23:00:35,265 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 222 places, 103 transitions [2020-02-10 23:00:35,898 INFO L129 PetriNetUnfolder]: 0/1335 cut-off events. [2020-02-10 23:00:35,898 INFO L130 PetriNetUnfolder]: For 29184/29340 co-relation queries the response was YES. [2020-02-10 23:00:35,916 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7883 conditions, 1335 events. 0/1335 cut-off events. For 29184/29340 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 17535 event pairs. 7/1204 useless extension candidates. Maximal degree in co-relation 7780. Up to 153 conditions per place. [2020-02-10 23:00:35,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 103 transitions [2020-02-10 23:00:35,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 103 transitions [2020-02-10 23:00:35,945 INFO L479 AbstractCegarLoop]: Abstraction has has 221 places, 103 transitions [2020-02-10 23:00:35,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:36,271 INFO L129 PetriNetUnfolder]: 0/1188 cut-off events. [2020-02-10 23:00:36,272 INFO L130 PetriNetUnfolder]: For 29331/29489 co-relation queries the response was YES. [2020-02-10 23:00:36,272 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:36,272 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:36,272 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:36,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:36,272 INFO L82 PathProgramCache]: Analyzing trace with hash -897955120, now seen corresponding path program 14 times [2020-02-10 23:00:36,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:36,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505075425] [2020-02-10 23:00:36,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:36,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505075425] [2020-02-10 23:00:36,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:36,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:36,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228853593] [2020-02-10 23:00:36,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:36,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:36,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:36,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:36,576 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:36,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 103 transitions. Second operand 9 states. [2020-02-10 23:00:36,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:36,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:36,577 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:39,614 INFO L129 PetriNetUnfolder]: 566/2913 cut-off events. [2020-02-10 23:00:39,615 INFO L130 PetriNetUnfolder]: For 83806/84411 co-relation queries the response was YES. [2020-02-10 23:00:39,657 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19875 conditions, 2913 events. 566/2913 cut-off events. For 83806/84411 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 35175 event pairs. 1/2808 useless extension candidates. Maximal degree in co-relation 19771. Up to 603 conditions per place. [2020-02-10 23:00:39,724 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 111 selfloop transitions, 38 changer transitions 1/164 dead transitions. [2020-02-10 23:00:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:39,726 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:39,726 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:39,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:39,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:39,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:39,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:39,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:39,728 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:39,728 INFO L178 Difference]: Start difference. First operand has 221 places, 103 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:39,730 INFO L206 Difference]: Finished difference. Result has 235 places, 111 transitions [2020-02-10 23:00:39,730 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2271, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2595, PETRI_PLACES=235, PETRI_TRANSITIONS=111} [2020-02-10 23:00:39,730 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 235 places, 111 transitions [2020-02-10 23:00:40,650 INFO L129 PetriNetUnfolder]: 0/1702 cut-off events. [2020-02-10 23:00:40,650 INFO L130 PetriNetUnfolder]: For 43337/43641 co-relation queries the response was YES. [2020-02-10 23:00:40,671 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10470 conditions, 1702 events. 0/1702 cut-off events. For 43337/43641 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 23687 event pairs. 12/1537 useless extension candidates. Maximal degree in co-relation 10360. Up to 193 conditions per place. [2020-02-10 23:00:40,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 111 transitions [2020-02-10 23:00:40,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 111 transitions [2020-02-10 23:00:40,706 INFO L479 AbstractCegarLoop]: Abstraction has has 234 places, 111 transitions [2020-02-10 23:00:40,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:41,187 INFO L129 PetriNetUnfolder]: 0/1515 cut-off events. [2020-02-10 23:00:41,187 INFO L130 PetriNetUnfolder]: For 43240/43550 co-relation queries the response was YES. [2020-02-10 23:00:41,187 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:41,187 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:41,188 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:41,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:41,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2087282060, now seen corresponding path program 15 times [2020-02-10 23:00:41,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:41,188 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110362589] [2020-02-10 23:00:41,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:41,523 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110362589] [2020-02-10 23:00:41,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:41,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:41,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72055286] [2020-02-10 23:00:41,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:41,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:41,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:41,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:41,525 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:41,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 111 transitions. Second operand 9 states. [2020-02-10 23:00:41,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:41,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:41,526 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:46,548 INFO L129 PetriNetUnfolder]: 659/3805 cut-off events. [2020-02-10 23:00:46,549 INFO L130 PetriNetUnfolder]: For 115989/116703 co-relation queries the response was YES. [2020-02-10 23:00:46,597 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27018 conditions, 3805 events. 659/3805 cut-off events. For 115989/116703 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 49022 event pairs. 1/3706 useless extension candidates. Maximal degree in co-relation 26907. Up to 903 conditions per place. [2020-02-10 23:00:46,678 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 129 selfloop transitions, 31 changer transitions 1/175 dead transitions. [2020-02-10 23:00:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:46,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:46,680 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:46,680 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:46,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:46,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:46,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:46,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:46,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:46,684 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:46,684 INFO L178 Difference]: Start difference. First operand has 234 places, 111 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:46,686 INFO L206 Difference]: Finished difference. Result has 249 places, 122 transitions [2020-02-10 23:00:46,686 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3013, PETRI_PLACES=249, PETRI_TRANSITIONS=122} [2020-02-10 23:00:46,686 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 249 places, 122 transitions [2020-02-10 23:00:48,955 INFO L129 PetriNetUnfolder]: 0/2363 cut-off events. [2020-02-10 23:00:48,955 INFO L130 PetriNetUnfolder]: For 68052/68352 co-relation queries the response was YES. [2020-02-10 23:00:48,992 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15012 conditions, 2363 events. 0/2363 cut-off events. For 68052/68352 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 34902 event pairs. 14/2120 useless extension candidates. Maximal degree in co-relation 14894. Up to 262 conditions per place. [2020-02-10 23:00:48,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 122 transitions [2020-02-10 23:00:49,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 122 transitions [2020-02-10 23:00:49,050 INFO L479 AbstractCegarLoop]: Abstraction has has 248 places, 122 transitions [2020-02-10 23:00:49,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:00:49,942 INFO L129 PetriNetUnfolder]: 0/2107 cut-off events. [2020-02-10 23:00:49,942 INFO L130 PetriNetUnfolder]: For 68277/68615 co-relation queries the response was YES. [2020-02-10 23:00:49,942 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:49,942 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:49,943 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:49,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:49,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1086948426, now seen corresponding path program 16 times [2020-02-10 23:00:49,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:49,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763670452] [2020-02-10 23:00:49,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:50,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763670452] [2020-02-10 23:00:50,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:50,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:00:50,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5294698] [2020-02-10 23:00:50,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:00:50,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:50,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:00:50,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:00:50,279 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:00:50,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 122 transitions. Second operand 9 states. [2020-02-10 23:00:50,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:50,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:00:50,280 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:58,047 INFO L129 PetriNetUnfolder]: 626/4557 cut-off events. [2020-02-10 23:00:58,047 INFO L130 PetriNetUnfolder]: For 156444/157298 co-relation queries the response was YES. [2020-02-10 23:00:58,108 INFO L76 FinitePrefix]: Finished finitePrefix Result has 33140 conditions, 4557 events. 626/4557 cut-off events. For 156444/157298 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 64142 event pairs. 3/4453 useless extension candidates. Maximal degree in co-relation 33021. Up to 948 conditions per place. [2020-02-10 23:00:58,214 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 131 selfloop transitions, 44 changer transitions 1/190 dead transitions. [2020-02-10 23:00:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:00:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:00:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:00:58,215 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:00:58,216 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:00:58,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:00:58,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:58,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:00:58,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:00:58,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:00:58,218 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:00:58,218 INFO L178 Difference]: Start difference. First operand has 248 places, 122 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:00:58,220 INFO L206 Difference]: Finished difference. Result has 262 places, 139 transitions [2020-02-10 23:00:58,221 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3013, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3667, PETRI_PLACES=262, PETRI_TRANSITIONS=139} [2020-02-10 23:00:58,221 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 262 places, 139 transitions [2020-02-10 23:01:02,272 INFO L129 PetriNetUnfolder]: 0/3114 cut-off events. [2020-02-10 23:01:02,272 INFO L130 PetriNetUnfolder]: For 104037/104395 co-relation queries the response was YES. [2020-02-10 23:01:02,332 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21015 conditions, 3114 events. 0/3114 cut-off events. For 104037/104395 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 48932 event pairs. 39/2847 useless extension candidates. Maximal degree in co-relation 20890. Up to 351 conditions per place. [2020-02-10 23:01:02,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 139 transitions [2020-02-10 23:01:02,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 139 transitions [2020-02-10 23:01:02,428 INFO L479 AbstractCegarLoop]: Abstraction has has 261 places, 139 transitions [2020-02-10 23:01:02,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:01:03,842 INFO L129 PetriNetUnfolder]: 0/2769 cut-off events. [2020-02-10 23:01:03,842 INFO L130 PetriNetUnfolder]: For 103255/103566 co-relation queries the response was YES. [2020-02-10 23:01:03,842 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:03,842 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:03,842 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:01:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:03,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1051916972, now seen corresponding path program 17 times [2020-02-10 23:01:03,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:03,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147748188] [2020-02-10 23:01:03,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:04,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147748188] [2020-02-10 23:01:04,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:04,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:01:04,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613197521] [2020-02-10 23:01:04,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:01:04,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:04,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:01:04,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:01:04,173 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:01:04,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 139 transitions. Second operand 9 states. [2020-02-10 23:01:04,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:04,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:01:04,174 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:12,917 INFO L129 PetriNetUnfolder]: 626/4729 cut-off events. [2020-02-10 23:01:12,918 INFO L130 PetriNetUnfolder]: For 177274/177649 co-relation queries the response was YES. [2020-02-10 23:01:12,985 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34954 conditions, 4729 events. 626/4729 cut-off events. For 177274/177649 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 67244 event pairs. 4/4621 useless extension candidates. Maximal degree in co-relation 34828. Up to 855 conditions per place. [2020-02-10 23:01:13,092 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 137 selfloop transitions, 56 changer transitions 0/207 dead transitions. [2020-02-10 23:01:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:01:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:01:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:01:13,094 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:01:13,094 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:01:13,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:01:13,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:13,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:01:13,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:01:13,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:01:13,097 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:01:13,097 INFO L178 Difference]: Start difference. First operand has 261 places, 139 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:01:13,100 INFO L206 Difference]: Finished difference. Result has 274 places, 151 transitions [2020-02-10 23:01:13,100 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3667, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4292, PETRI_PLACES=274, PETRI_TRANSITIONS=151} [2020-02-10 23:01:13,100 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 274 places, 151 transitions [2020-02-10 23:01:17,253 INFO L129 PetriNetUnfolder]: 0/3113 cut-off events. [2020-02-10 23:01:17,254 INFO L130 PetriNetUnfolder]: For 116243/116590 co-relation queries the response was YES. [2020-02-10 23:01:17,321 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21865 conditions, 3113 events. 0/3113 cut-off events. For 116243/116590 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 49040 event pairs. 17/2819 useless extension candidates. Maximal degree in co-relation 21734. Up to 351 conditions per place. [2020-02-10 23:01:17,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 151 transitions [2020-02-10 23:01:17,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 151 transitions [2020-02-10 23:01:17,423 INFO L479 AbstractCegarLoop]: Abstraction has has 274 places, 151 transitions [2020-02-10 23:01:17,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:01:18,753 INFO L129 PetriNetUnfolder]: 0/2769 cut-off events. [2020-02-10 23:01:18,753 INFO L130 PetriNetUnfolder]: For 116231/116584 co-relation queries the response was YES. [2020-02-10 23:01:18,754 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:18,754 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:18,754 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:01:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:18,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1536751684, now seen corresponding path program 18 times [2020-02-10 23:01:18,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:18,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088455464] [2020-02-10 23:01:18,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:19,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088455464] [2020-02-10 23:01:19,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:19,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:01:19,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238010080] [2020-02-10 23:01:19,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:01:19,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:19,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:01:19,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:01:19,086 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:01:19,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 151 transitions. Second operand 9 states. [2020-02-10 23:01:19,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:19,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:01:19,087 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:29,686 INFO L129 PetriNetUnfolder]: 674/5641 cut-off events. [2020-02-10 23:01:29,686 INFO L130 PetriNetUnfolder]: For 243527/245019 co-relation queries the response was YES. [2020-02-10 23:01:29,774 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44039 conditions, 5641 events. 674/5641 cut-off events. For 243527/245019 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 84516 event pairs. 2/5488 useless extension candidates. Maximal degree in co-relation 43907. Up to 1550 conditions per place. [2020-02-10 23:01:29,911 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 215 selfloop transitions, 55 changer transitions 1/285 dead transitions. [2020-02-10 23:01:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:01:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:01:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:01:29,913 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:01:29,913 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:01:29,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:01:29,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:29,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:01:29,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:01:29,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:01:29,916 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:01:29,916 INFO L178 Difference]: Start difference. First operand has 274 places, 151 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:01:29,919 INFO L206 Difference]: Finished difference. Result has 289 places, 175 transitions [2020-02-10 23:01:29,920 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4292, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5333, PETRI_PLACES=289, PETRI_TRANSITIONS=175} [2020-02-10 23:01:29,920 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 289 places, 175 transitions [2020-02-10 23:01:37,114 INFO L129 PetriNetUnfolder]: 0/4017 cut-off events. [2020-02-10 23:01:37,114 INFO L130 PetriNetUnfolder]: For 179864/181193 co-relation queries the response was YES. [2020-02-10 23:01:37,177 INFO L76 FinitePrefix]: Finished finitePrefix Result has 29279 conditions, 4017 events. 0/4017 cut-off events. For 179864/181193 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 65832 event pairs. 25/3660 useless extension candidates. Maximal degree in co-relation 29140. Up to 452 conditions per place. [2020-02-10 23:01:37,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 175 transitions [2020-02-10 23:01:37,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 175 transitions [2020-02-10 23:01:37,270 INFO L479 AbstractCegarLoop]: Abstraction has has 289 places, 175 transitions [2020-02-10 23:01:37,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:01:39,418 INFO L129 PetriNetUnfolder]: 0/3573 cut-off events. [2020-02-10 23:01:39,419 INFO L130 PetriNetUnfolder]: For 179759/181047 co-relation queries the response was YES. [2020-02-10 23:01:39,419 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:39,419 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:39,419 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:01:39,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:39,419 INFO L82 PathProgramCache]: Analyzing trace with hash -829485626, now seen corresponding path program 19 times [2020-02-10 23:01:39,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:39,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403163183] [2020-02-10 23:01:39,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:39,749 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403163183] [2020-02-10 23:01:39,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:39,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:01:39,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948508864] [2020-02-10 23:01:39,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:01:39,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:39,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:01:39,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:01:39,751 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:01:39,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 175 transitions. Second operand 9 states. [2020-02-10 23:01:39,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:39,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:01:39,752 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:53,098 INFO L129 PetriNetUnfolder]: 668/5916 cut-off events. [2020-02-10 23:01:53,098 INFO L130 PetriNetUnfolder]: For 293486/296371 co-relation queries the response was YES. [2020-02-10 23:01:53,196 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48360 conditions, 5916 events. 668/5916 cut-off events. For 293486/296371 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 89858 event pairs. 9/5759 useless extension candidates. Maximal degree in co-relation 48220. Up to 1550 conditions per place. [2020-02-10 23:01:53,348 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 231 selfloop transitions, 63 changer transitions 3/311 dead transitions. [2020-02-10 23:01:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:01:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:01:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:01:53,350 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:01:53,350 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:01:53,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:01:53,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:53,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:01:53,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:01:53,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:01:53,352 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:01:53,352 INFO L178 Difference]: Start difference. First operand has 289 places, 175 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:01:53,356 INFO L206 Difference]: Finished difference. Result has 303 places, 196 transitions [2020-02-10 23:01:53,356 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=5333, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6260, PETRI_PLACES=303, PETRI_TRANSITIONS=196} [2020-02-10 23:01:53,356 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 303 places, 196 transitions [2020-02-10 23:02:01,514 INFO L129 PetriNetUnfolder]: 0/4409 cut-off events. [2020-02-10 23:02:01,514 INFO L130 PetriNetUnfolder]: For 208649/209569 co-relation queries the response was YES. [2020-02-10 23:02:01,583 INFO L76 FinitePrefix]: Finished finitePrefix Result has 33135 conditions, 4409 events. 0/4409 cut-off events. For 208649/209569 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 73392 event pairs. 29/4042 useless extension candidates. Maximal degree in co-relation 32989. Up to 492 conditions per place. [2020-02-10 23:02:01,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 196 transitions [2020-02-10 23:02:01,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 196 transitions [2020-02-10 23:02:01,692 INFO L479 AbstractCegarLoop]: Abstraction has has 302 places, 196 transitions [2020-02-10 23:02:01,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:02:04,246 INFO L129 PetriNetUnfolder]: 0/3925 cut-off events. [2020-02-10 23:02:04,247 INFO L130 PetriNetUnfolder]: For 212060/213072 co-relation queries the response was YES. [2020-02-10 23:02:04,247 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:04,247 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:04,247 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:02:04,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash -459739322, now seen corresponding path program 20 times [2020-02-10 23:02:04,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:04,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788262659] [2020-02-10 23:02:04,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:04,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788262659] [2020-02-10 23:02:04,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:04,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:02:04,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354329833] [2020-02-10 23:02:04,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:02:04,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:02:04,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:02:04,571 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:02:04,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 196 transitions. Second operand 9 states. [2020-02-10 23:02:04,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:04,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:02:04,572 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:18,762 INFO L129 PetriNetUnfolder]: 668/5992 cut-off events. [2020-02-10 23:02:18,763 INFO L130 PetriNetUnfolder]: For 316833/319661 co-relation queries the response was YES. [2020-02-10 23:02:18,878 INFO L76 FinitePrefix]: Finished finitePrefix Result has 50163 conditions, 5992 events. 668/5992 cut-off events. For 316833/319661 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 91138 event pairs. 4/5841 useless extension candidates. Maximal degree in co-relation 50016. Up to 1158 conditions per place. [2020-02-10 23:02:19,039 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 228 selfloop transitions, 72 changer transitions 1/315 dead transitions. [2020-02-10 23:02:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:02:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:02:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:02:19,040 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:02:19,040 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:02:19,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:02:19,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:19,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:02:19,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:02:19,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:02:19,043 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:02:19,043 INFO L178 Difference]: Start difference. First operand has 302 places, 196 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:02:19,046 INFO L206 Difference]: Finished difference. Result has 314 places, 208 transitions [2020-02-10 23:02:19,047 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6260, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6854, PETRI_PLACES=314, PETRI_TRANSITIONS=208} [2020-02-10 23:02:19,047 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 314 places, 208 transitions [2020-02-10 23:02:26,512 INFO L129 PetriNetUnfolder]: 0/4400 cut-off events. [2020-02-10 23:02:26,512 INFO L130 PetriNetUnfolder]: For 227686/228711 co-relation queries the response was YES. [2020-02-10 23:02:26,582 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34158 conditions, 4400 events. 0/4400 cut-off events. For 227686/228711 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 73267 event pairs. 29/4065 useless extension candidates. Maximal degree in co-relation 34007. Up to 491 conditions per place. [2020-02-10 23:02:26,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 208 transitions [2020-02-10 23:02:26,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 208 transitions [2020-02-10 23:02:26,691 INFO L479 AbstractCegarLoop]: Abstraction has has 313 places, 208 transitions [2020-02-10 23:02:26,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:02:29,303 INFO L129 PetriNetUnfolder]: 0/3917 cut-off events. [2020-02-10 23:02:29,303 INFO L130 PetriNetUnfolder]: For 227197/228219 co-relation queries the response was YES. [2020-02-10 23:02:29,303 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:29,304 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:29,304 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:02:29,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:29,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1744146788, now seen corresponding path program 21 times [2020-02-10 23:02:29,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:29,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8238354] [2020-02-10 23:02:29,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:29,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8238354] [2020-02-10 23:02:29,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:29,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:02:29,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100841083] [2020-02-10 23:02:29,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:02:29,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:29,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:02:29,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:02:29,665 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:02:29,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 208 transitions. Second operand 9 states. [2020-02-10 23:02:29,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:29,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:02:29,666 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:44,871 INFO L129 PetriNetUnfolder]: 668/6002 cut-off events. [2020-02-10 23:02:44,871 INFO L130 PetriNetUnfolder]: For 336290/339198 co-relation queries the response was YES. [2020-02-10 23:02:44,977 INFO L76 FinitePrefix]: Finished finitePrefix Result has 51565 conditions, 6002 events. 668/6002 cut-off events. For 336290/339198 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 91333 event pairs. 9/5860 useless extension candidates. Maximal degree in co-relation 51413. Up to 1158 conditions per place. [2020-02-10 23:02:45,140 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 206 selfloop transitions, 86 changer transitions 1/307 dead transitions. [2020-02-10 23:02:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:02:45,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:02:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:02:45,141 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:02:45,141 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:02:45,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:02:45,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:45,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:02:45,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:02:45,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:02:45,143 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:02:45,143 INFO L178 Difference]: Start difference. First operand has 313 places, 208 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:02:45,146 INFO L206 Difference]: Finished difference. Result has 326 places, 221 transitions [2020-02-10 23:02:45,146 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6854, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7699, PETRI_PLACES=326, PETRI_TRANSITIONS=221} [2020-02-10 23:02:45,146 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 326 places, 221 transitions [2020-02-10 23:02:53,443 INFO L129 PetriNetUnfolder]: 0/4394 cut-off events. [2020-02-10 23:02:53,443 INFO L130 PetriNetUnfolder]: For 248643/249700 co-relation queries the response was YES. [2020-02-10 23:02:53,517 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35283 conditions, 4394 events. 0/4394 cut-off events. For 248643/249700 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 73111 event pairs. 40/4055 useless extension candidates. Maximal degree in co-relation 35126. Up to 490 conditions per place. [2020-02-10 23:02:53,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 221 transitions [2020-02-10 23:02:53,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 221 transitions [2020-02-10 23:02:53,631 INFO L479 AbstractCegarLoop]: Abstraction has has 325 places, 221 transitions [2020-02-10 23:02:53,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:02:56,602 INFO L129 PetriNetUnfolder]: 0/3912 cut-off events. [2020-02-10 23:02:56,602 INFO L130 PetriNetUnfolder]: For 248304/249361 co-relation queries the response was YES. [2020-02-10 23:02:56,602 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:56,603 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:56,603 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:02:56,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:56,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1738535972, now seen corresponding path program 22 times [2020-02-10 23:02:56,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:56,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435754232] [2020-02-10 23:02:56,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:56,945 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435754232] [2020-02-10 23:02:56,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:56,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:02:56,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505143381] [2020-02-10 23:02:56,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:02:56,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:56,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:02:56,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:02:56,947 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:02:56,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 221 transitions. Second operand 9 states. [2020-02-10 23:02:56,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:56,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:02:56,947 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:13,148 INFO L129 PetriNetUnfolder]: 673/6182 cut-off events. [2020-02-10 23:03:13,148 INFO L130 PetriNetUnfolder]: For 374680/377780 co-relation queries the response was YES. [2020-02-10 23:03:13,258 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55095 conditions, 6182 events. 673/6182 cut-off events. For 374680/377780 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 94524 event pairs. 1/6021 useless extension candidates. Maximal degree in co-relation 54937. Up to 1182 conditions per place. [2020-02-10 23:03:13,541 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 164 selfloop transitions, 118 changer transitions 0/296 dead transitions. [2020-02-10 23:03:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:03:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:03:13,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:03:13,543 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:03:13,543 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:03:13,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:03:13,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:13,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:03:13,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:03:13,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:03:13,545 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:03:13,546 INFO L178 Difference]: Start difference. First operand has 325 places, 221 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:03:13,550 INFO L206 Difference]: Finished difference. Result has 339 places, 240 transitions [2020-02-10 23:03:13,550 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=7699, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8782, PETRI_PLACES=339, PETRI_TRANSITIONS=240} [2020-02-10 23:03:13,551 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 339 places, 240 transitions [2020-02-10 23:03:22,075 INFO L129 PetriNetUnfolder]: 0/4664 cut-off events. [2020-02-10 23:03:22,076 INFO L130 PetriNetUnfolder]: For 288261/289343 co-relation queries the response was YES. [2020-02-10 23:03:22,155 INFO L76 FinitePrefix]: Finished finitePrefix Result has 38563 conditions, 4664 events. 0/4664 cut-off events. For 288261/289343 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 78322 event pairs. 42/4322 useless extension candidates. Maximal degree in co-relation 38399. Up to 518 conditions per place. [2020-02-10 23:03:22,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 240 transitions [2020-02-10 23:03:22,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 240 transitions [2020-02-10 23:03:22,280 INFO L479 AbstractCegarLoop]: Abstraction has has 339 places, 240 transitions [2020-02-10 23:03:22,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:03:25,295 INFO L129 PetriNetUnfolder]: 0/4155 cut-off events. [2020-02-10 23:03:25,295 INFO L130 PetriNetUnfolder]: For 288384/289503 co-relation queries the response was YES. [2020-02-10 23:03:25,295 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:25,295 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:25,296 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:03:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1273890348, now seen corresponding path program 23 times [2020-02-10 23:03:25,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:25,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973136045] [2020-02-10 23:03:25,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:25,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973136045] [2020-02-10 23:03:25,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:25,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:03:25,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884890984] [2020-02-10 23:03:25,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:03:25,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:25,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:03:25,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:03:25,634 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:03:25,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 240 transitions. Second operand 9 states. [2020-02-10 23:03:25,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:25,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:03:25,635 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:42,294 INFO L129 PetriNetUnfolder]: 673/6181 cut-off events. [2020-02-10 23:03:42,294 INFO L130 PetriNetUnfolder]: For 408717/411817 co-relation queries the response was YES. [2020-02-10 23:03:42,415 INFO L76 FinitePrefix]: Finished finitePrefix Result has 56707 conditions, 6181 events. 673/6181 cut-off events. For 408717/411817 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 94577 event pairs. 1/6029 useless extension candidates. Maximal degree in co-relation 56542. Up to 1182 conditions per place. [2020-02-10 23:03:42,599 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 165 selfloop transitions, 114 changer transitions 3/296 dead transitions. [2020-02-10 23:03:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:03:42,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:03:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:03:42,601 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:03:42,601 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:03:42,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:03:42,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:42,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:03:42,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:03:42,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:03:42,603 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:03:42,603 INFO L178 Difference]: Start difference. First operand has 339 places, 240 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:03:42,607 INFO L206 Difference]: Finished difference. Result has 349 places, 238 transitions [2020-02-10 23:03:42,608 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=8782, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8950, PETRI_PLACES=349, PETRI_TRANSITIONS=238} [2020-02-10 23:03:42,608 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 349 places, 238 transitions [2020-02-10 23:03:51,473 INFO L129 PetriNetUnfolder]: 0/4652 cut-off events. [2020-02-10 23:03:51,474 INFO L130 PetriNetUnfolder]: For 306855/307973 co-relation queries the response was YES. [2020-02-10 23:03:51,556 INFO L76 FinitePrefix]: Finished finitePrefix Result has 39442 conditions, 4652 events. 0/4652 cut-off events. For 306855/307973 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 78124 event pairs. 55/4325 useless extension candidates. Maximal degree in co-relation 39275. Up to 516 conditions per place. [2020-02-10 23:03:51,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 238 transitions [2020-02-10 23:03:51,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 238 transitions [2020-02-10 23:03:51,685 INFO L479 AbstractCegarLoop]: Abstraction has has 347 places, 238 transitions [2020-02-10 23:03:51,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:03:54,821 INFO L129 PetriNetUnfolder]: 0/4144 cut-off events. [2020-02-10 23:03:54,821 INFO L130 PetriNetUnfolder]: For 307131/308248 co-relation queries the response was YES. [2020-02-10 23:03:54,821 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:54,821 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:54,822 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:03:54,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:54,822 INFO L82 PathProgramCache]: Analyzing trace with hash -15242926, now seen corresponding path program 24 times [2020-02-10 23:03:54,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:54,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505193842] [2020-02-10 23:03:54,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:55,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505193842] [2020-02-10 23:03:55,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:55,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:03:55,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711623113] [2020-02-10 23:03:55,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:03:55,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:55,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:03:55,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:03:55,111 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:03:55,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 238 transitions. Second operand 9 states. [2020-02-10 23:03:55,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:55,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:03:55,111 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:12,702 INFO L129 PetriNetUnfolder]: 673/6289 cut-off events. [2020-02-10 23:04:12,703 INFO L130 PetriNetUnfolder]: For 435463/438371 co-relation queries the response was YES. [2020-02-10 23:04:12,820 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58100 conditions, 6289 events. 673/6289 cut-off events. For 435463/438371 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 96958 event pairs. 9/6146 useless extension candidates. Maximal degree in co-relation 57932. Up to 1201 conditions per place. [2020-02-10 23:04:13,017 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 229 selfloop transitions, 84 changer transitions 1/328 dead transitions. [2020-02-10 23:04:13,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:04:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:04:13,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:04:13,019 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:04:13,019 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:04:13,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:04:13,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:13,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:04:13,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:04:13,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:04:13,022 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:04:13,022 INFO L178 Difference]: Start difference. First operand has 347 places, 238 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:04:13,025 INFO L206 Difference]: Finished difference. Result has 359 places, 241 transitions [2020-02-10 23:04:13,026 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=8950, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9242, PETRI_PLACES=359, PETRI_TRANSITIONS=241} [2020-02-10 23:04:13,026 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 359 places, 241 transitions [2020-02-10 23:04:21,663 INFO L129 PetriNetUnfolder]: 0/4648 cut-off events. [2020-02-10 23:04:21,664 INFO L130 PetriNetUnfolder]: For 326213/327368 co-relation queries the response was YES. [2020-02-10 23:04:21,750 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40436 conditions, 4648 events. 0/4648 cut-off events. For 326213/327368 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 77999 event pairs. 52/4323 useless extension candidates. Maximal degree in co-relation 40264. Up to 515 conditions per place. [2020-02-10 23:04:21,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 359 places, 241 transitions [2020-02-10 23:04:21,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 241 transitions [2020-02-10 23:04:21,882 INFO L479 AbstractCegarLoop]: Abstraction has has 358 places, 241 transitions [2020-02-10 23:04:21,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:04:25,129 INFO L129 PetriNetUnfolder]: 0/4141 cut-off events. [2020-02-10 23:04:25,129 INFO L130 PetriNetUnfolder]: For 326080/327237 co-relation queries the response was YES. [2020-02-10 23:04:25,129 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:25,130 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:25,130 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:04:25,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:25,130 INFO L82 PathProgramCache]: Analyzing trace with hash 744259764, now seen corresponding path program 25 times [2020-02-10 23:04:25,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:25,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238582913] [2020-02-10 23:04:25,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:25,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238582913] [2020-02-10 23:04:25,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:25,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:04:25,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078550191] [2020-02-10 23:04:25,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:04:25,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:25,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:04:25,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:04:25,462 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:04:25,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 241 transitions. Second operand 9 states. [2020-02-10 23:04:25,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:25,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:04:25,462 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:43,975 INFO L129 PetriNetUnfolder]: 664/6353 cut-off events. [2020-02-10 23:04:43,975 INFO L130 PetriNetUnfolder]: For 462404/465232 co-relation queries the response was YES. [2020-02-10 23:04:44,103 INFO L76 FinitePrefix]: Finished finitePrefix Result has 59896 conditions, 6353 events. 664/6353 cut-off events. For 462404/465232 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 98343 event pairs. 4/6201 useless extension candidates. Maximal degree in co-relation 59723. Up to 1201 conditions per place. [2020-02-10 23:04:44,298 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 248 selfloop transitions, 85 changer transitions 2/349 dead transitions. [2020-02-10 23:04:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:04:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:04:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:04:44,299 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:04:44,299 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:04:44,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:04:44,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:44,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:04:44,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:04:44,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:04:44,301 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:04:44,301 INFO L178 Difference]: Start difference. First operand has 358 places, 241 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:04:44,304 INFO L206 Difference]: Finished difference. Result has 371 places, 257 transitions [2020-02-10 23:04:44,305 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=9242, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10030, PETRI_PLACES=371, PETRI_TRANSITIONS=257} [2020-02-10 23:04:44,305 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 371 places, 257 transitions [2020-02-10 23:04:54,283 INFO L129 PetriNetUnfolder]: 0/4729 cut-off events. [2020-02-10 23:04:54,283 INFO L130 PetriNetUnfolder]: For 353960/355179 co-relation queries the response was YES. [2020-02-10 23:04:54,373 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42307 conditions, 4729 events. 0/4729 cut-off events. For 353960/355179 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 79551 event pairs. 53/4404 useless extension candidates. Maximal degree in co-relation 42129. Up to 525 conditions per place. [2020-02-10 23:04:54,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 257 transitions [2020-02-10 23:04:54,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 370 places, 257 transitions [2020-02-10 23:04:54,510 INFO L479 AbstractCegarLoop]: Abstraction has has 370 places, 257 transitions [2020-02-10 23:04:54,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:04:58,026 INFO L129 PetriNetUnfolder]: 0/4213 cut-off events. [2020-02-10 23:04:58,027 INFO L130 PetriNetUnfolder]: For 353908/355122 co-relation queries the response was YES. [2020-02-10 23:04:58,027 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:58,027 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:58,027 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:04:58,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:58,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1755825804, now seen corresponding path program 26 times [2020-02-10 23:04:58,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:58,028 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929910026] [2020-02-10 23:04:58,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:58,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929910026] [2020-02-10 23:04:58,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:58,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:04:58,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742973962] [2020-02-10 23:04:58,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:04:58,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:58,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:04:58,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:04:58,339 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:04:58,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 257 transitions. Second operand 9 states. [2020-02-10 23:04:58,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:58,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:04:58,339 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:18,792 INFO L129 PetriNetUnfolder]: 656/6334 cut-off events. [2020-02-10 23:05:18,792 INFO L130 PetriNetUnfolder]: For 496716/499786 co-relation queries the response was YES. [2020-02-10 23:05:18,921 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61825 conditions, 6334 events. 656/6334 cut-off events. For 496716/499786 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 98421 event pairs. 11/6173 useless extension candidates. Maximal degree in co-relation 61646. Up to 1650 conditions per place. [2020-02-10 23:05:19,120 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 275 selfloop transitions, 78 changer transitions 2/369 dead transitions. [2020-02-10 23:05:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:05:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:05:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:05:19,121 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:05:19,122 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:05:19,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:05:19,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:19,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:05:19,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:05:19,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:05:19,124 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:05:19,124 INFO L178 Difference]: Start difference. First operand has 370 places, 257 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:05:19,127 INFO L206 Difference]: Finished difference. Result has 383 places, 265 transitions [2020-02-10 23:05:19,128 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10030, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10559, PETRI_PLACES=383, PETRI_TRANSITIONS=265} [2020-02-10 23:05:19,128 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 383 places, 265 transitions [2020-02-10 23:05:29,597 INFO L129 PetriNetUnfolder]: 0/4819 cut-off events. [2020-02-10 23:05:29,597 INFO L130 PetriNetUnfolder]: For 379051/380272 co-relation queries the response was YES. [2020-02-10 23:05:29,693 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44121 conditions, 4819 events. 0/4819 cut-off events. For 379051/380272 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 81310 event pairs. 47/4487 useless extension candidates. Maximal degree in co-relation 43937. Up to 533 conditions per place. [2020-02-10 23:05:29,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 265 transitions [2020-02-10 23:05:29,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 265 transitions [2020-02-10 23:05:29,838 INFO L479 AbstractCegarLoop]: Abstraction has has 382 places, 265 transitions [2020-02-10 23:05:29,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:05:33,284 INFO L129 PetriNetUnfolder]: 0/4295 cut-off events. [2020-02-10 23:05:33,284 INFO L130 PetriNetUnfolder]: For 380947/382204 co-relation queries the response was YES. [2020-02-10 23:05:33,284 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:33,285 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:33,285 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:05:33,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:33,285 INFO L82 PathProgramCache]: Analyzing trace with hash 952725780, now seen corresponding path program 27 times [2020-02-10 23:05:33,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:33,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115620372] [2020-02-10 23:05:33,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:33,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115620372] [2020-02-10 23:05:33,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:33,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:05:33,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180608866] [2020-02-10 23:05:33,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:05:33,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:33,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:05:33,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:05:33,593 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:05:33,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 265 transitions. Second operand 9 states. [2020-02-10 23:05:33,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:33,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:05:33,593 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:54,341 INFO L129 PetriNetUnfolder]: 656/6333 cut-off events. [2020-02-10 23:05:54,341 INFO L130 PetriNetUnfolder]: For 515823/518767 co-relation queries the response was YES. [2020-02-10 23:05:54,474 INFO L76 FinitePrefix]: Finished finitePrefix Result has 63216 conditions, 6333 events. 656/6333 cut-off events. For 515823/518767 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 98097 event pairs. 1/6177 useless extension candidates. Maximal degree in co-relation 63031. Up to 1365 conditions per place. [2020-02-10 23:05:54,679 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 214 selfloop transitions, 96 changer transitions 0/324 dead transitions. [2020-02-10 23:05:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:05:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:05:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:05:54,681 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:05:54,681 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:05:54,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:05:54,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:54,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:05:54,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:05:54,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:05:54,684 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:05:54,684 INFO L178 Difference]: Start difference. First operand has 382 places, 265 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:05:54,689 INFO L206 Difference]: Finished difference. Result has 395 places, 277 transitions [2020-02-10 23:05:54,689 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10559, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11351, PETRI_PLACES=395, PETRI_TRANSITIONS=277} [2020-02-10 23:05:54,689 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 395 places, 277 transitions [2020-02-10 23:06:05,650 INFO L129 PetriNetUnfolder]: 0/4818 cut-off events. [2020-02-10 23:06:05,651 INFO L130 PetriNetUnfolder]: For 414068/415445 co-relation queries the response was YES. [2020-02-10 23:06:05,749 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45436 conditions, 4818 events. 0/4818 cut-off events. For 414068/415445 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 81222 event pairs. 74/4502 useless extension candidates. Maximal degree in co-relation 45246. Up to 533 conditions per place. [2020-02-10 23:06:05,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 395 places, 277 transitions [2020-02-10 23:06:05,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 395 places, 277 transitions [2020-02-10 23:06:05,897 INFO L479 AbstractCegarLoop]: Abstraction has has 395 places, 277 transitions [2020-02-10 23:06:05,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:06:09,623 INFO L129 PetriNetUnfolder]: 0/4295 cut-off events. [2020-02-10 23:06:09,623 INFO L130 PetriNetUnfolder]: For 413180/414526 co-relation queries the response was YES. [2020-02-10 23:06:09,623 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:09,623 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:09,623 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:06:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:09,624 INFO L82 PathProgramCache]: Analyzing trace with hash -233005028, now seen corresponding path program 28 times [2020-02-10 23:06:09,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:09,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238286412] [2020-02-10 23:06:09,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:09,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238286412] [2020-02-10 23:06:09,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:09,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:06:09,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253159222] [2020-02-10 23:06:09,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:06:09,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:09,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:06:09,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:06:09,952 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:06:09,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 277 transitions. Second operand 9 states. [2020-02-10 23:06:09,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:09,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:06:09,952 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:34,368 INFO L129 PetriNetUnfolder]: 656/6792 cut-off events. [2020-02-10 23:06:34,368 INFO L130 PetriNetUnfolder]: For 565255/568199 co-relation queries the response was YES. [2020-02-10 23:06:34,515 INFO L76 FinitePrefix]: Finished finitePrefix Result has 65750 conditions, 6792 events. 656/6792 cut-off events. For 565255/568199 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 107485 event pairs. 8/6678 useless extension candidates. Maximal degree in co-relation 65559. Up to 1794 conditions per place. [2020-02-10 23:06:34,749 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 299 selfloop transitions, 100 changer transitions 3/416 dead transitions. [2020-02-10 23:06:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:06:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:06:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:06:34,750 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:06:34,750 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:06:34,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:06:34,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:34,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:06:34,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:06:34,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:06:34,753 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:06:34,753 INFO L178 Difference]: Start difference. First operand has 395 places, 277 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:06:34,757 INFO L206 Difference]: Finished difference. Result has 409 places, 326 transitions [2020-02-10 23:06:34,758 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=11351, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14221, PETRI_PLACES=409, PETRI_TRANSITIONS=326} [2020-02-10 23:06:34,758 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 409 places, 326 transitions [2020-02-10 23:06:46,251 INFO L129 PetriNetUnfolder]: 0/4814 cut-off events. [2020-02-10 23:06:46,251 INFO L130 PetriNetUnfolder]: For 444883/446414 co-relation queries the response was YES. [2020-02-10 23:06:46,351 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46479 conditions, 4814 events. 0/4814 cut-off events. For 444883/446414 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 81204 event pairs. 72/4538 useless extension candidates. Maximal degree in co-relation 46282. Up to 533 conditions per place. [2020-02-10 23:06:46,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 326 transitions [2020-02-10 23:06:46,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 326 transitions [2020-02-10 23:06:46,504 INFO L479 AbstractCegarLoop]: Abstraction has has 409 places, 326 transitions [2020-02-10 23:06:46,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:06:50,564 INFO L129 PetriNetUnfolder]: 0/4292 cut-off events. [2020-02-10 23:06:50,564 INFO L130 PetriNetUnfolder]: For 444552/446071 co-relation queries the response was YES. [2020-02-10 23:06:50,564 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:50,565 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:50,565 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:06:50,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:50,565 INFO L82 PathProgramCache]: Analyzing trace with hash 377980086, now seen corresponding path program 29 times [2020-02-10 23:06:50,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:50,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123903445] [2020-02-10 23:06:50,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:50,727 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-02-10 23:06:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:51,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123903445] [2020-02-10 23:06:51,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:51,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:06:51,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090268662] [2020-02-10 23:06:51,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:06:51,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:51,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:06:51,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:06:51,004 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:06:51,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 326 transitions. Second operand 9 states. [2020-02-10 23:06:51,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:51,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:06:51,005 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:13,416 INFO L129 PetriNetUnfolder]: 656/6339 cut-off events. [2020-02-10 23:07:13,416 INFO L130 PetriNetUnfolder]: For 589975/593539 co-relation queries the response was YES. [2020-02-10 23:07:13,576 INFO L76 FinitePrefix]: Finished finitePrefix Result has 66348 conditions, 6339 events. 656/6339 cut-off events. For 589975/593539 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 98192 event pairs. 1/6185 useless extension candidates. Maximal degree in co-relation 66150. Up to 1364 conditions per place. [2020-02-10 23:07:13,798 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 251 selfloop transitions, 111 changer transitions 3/379 dead transitions. [2020-02-10 23:07:13,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:07:13,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:07:13,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:07:13,800 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:07:13,800 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:07:13,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:07:13,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:13,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:07:13,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:07:13,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:07:13,801 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:07:13,802 INFO L178 Difference]: Start difference. First operand has 409 places, 326 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:07:13,806 INFO L206 Difference]: Finished difference. Result has 420 places, 325 transitions [2020-02-10 23:07:13,806 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14221, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14413, PETRI_PLACES=420, PETRI_TRANSITIONS=325} [2020-02-10 23:07:13,806 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 420 places, 325 transitions [2020-02-10 23:07:25,426 INFO L129 PetriNetUnfolder]: 0/4804 cut-off events. [2020-02-10 23:07:25,427 INFO L130 PetriNetUnfolder]: For 467440/468971 co-relation queries the response was YES. [2020-02-10 23:07:25,530 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47432 conditions, 4804 events. 0/4804 cut-off events. For 467440/468971 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 81073 event pairs. 68/4524 useless extension candidates. Maximal degree in co-relation 47231. Up to 531 conditions per place. [2020-02-10 23:07:25,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 420 places, 325 transitions [2020-02-10 23:07:25,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 418 places, 325 transitions [2020-02-10 23:07:25,686 INFO L479 AbstractCegarLoop]: Abstraction has has 418 places, 325 transitions [2020-02-10 23:07:25,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:07:29,842 INFO L129 PetriNetUnfolder]: 0/4283 cut-off events. [2020-02-10 23:07:29,842 INFO L130 PetriNetUnfolder]: For 467949/469489 co-relation queries the response was YES. [2020-02-10 23:07:29,842 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:29,842 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:29,843 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:07:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:29,843 INFO L82 PathProgramCache]: Analyzing trace with hash -887030582, now seen corresponding path program 30 times [2020-02-10 23:07:29,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:29,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353299285] [2020-02-10 23:07:29,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:30,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353299285] [2020-02-10 23:07:30,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:30,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:07:30,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519079599] [2020-02-10 23:07:30,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:07:30,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:30,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:07:30,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:07:30,204 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:07:30,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 325 transitions. Second operand 9 states. [2020-02-10 23:07:30,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:30,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:07:30,205 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:08:00,217 INFO L129 PetriNetUnfolder]: 616/7127 cut-off events. [2020-02-10 23:08:00,217 INFO L130 PetriNetUnfolder]: For 698657/702221 co-relation queries the response was YES. [2020-02-10 23:08:00,381 INFO L76 FinitePrefix]: Finished finitePrefix Result has 75016 conditions, 7127 events. 616/7127 cut-off events. For 698657/702221 co-relation queries the response was YES. Maximal size of possible extension queue 966. Compared 114953 event pairs. 1/6965 useless extension candidates. Maximal degree in co-relation 74814. Up to 1195 conditions per place. [2020-02-10 23:08:00,635 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 294 selfloop transitions, 142 changer transitions 2/452 dead transitions. [2020-02-10 23:08:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:08:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:08:00,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:08:00,636 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:08:00,636 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:08:00,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:08:00,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:08:00,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:08:00,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:08:00,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:08:00,639 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:08:00,639 INFO L178 Difference]: Start difference. First operand has 418 places, 325 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:08:00,646 INFO L206 Difference]: Finished difference. Result has 432 places, 358 transitions [2020-02-10 23:08:00,646 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14413, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16242, PETRI_PLACES=432, PETRI_TRANSITIONS=358} [2020-02-10 23:08:00,646 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 432 places, 358 transitions [2020-02-10 23:08:15,128 INFO L129 PetriNetUnfolder]: 0/5698 cut-off events. [2020-02-10 23:08:15,128 INFO L130 PetriNetUnfolder]: For 588248/589820 co-relation queries the response was YES. [2020-02-10 23:08:15,257 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57693 conditions, 5698 events. 0/5698 cut-off events. For 588248/589820 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 99124 event pairs. 75/5410 useless extension candidates. Maximal degree in co-relation 57485. Up to 625 conditions per place. [2020-02-10 23:08:15,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 358 transitions [2020-02-10 23:08:15,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 431 places, 358 transitions [2020-02-10 23:08:15,444 INFO L479 AbstractCegarLoop]: Abstraction has has 431 places, 358 transitions [2020-02-10 23:08:15,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:08:20,705 INFO L129 PetriNetUnfolder]: 0/5083 cut-off events. [2020-02-10 23:08:20,705 INFO L130 PetriNetUnfolder]: For 592676/594523 co-relation queries the response was YES. [2020-02-10 23:08:20,705 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:08:20,705 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:08:20,706 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:08:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:08:20,706 INFO L82 PathProgramCache]: Analyzing trace with hash -755890388, now seen corresponding path program 31 times [2020-02-10 23:08:20,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:08:20,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598176830] [2020-02-10 23:08:20,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:08:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:08:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:08:21,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598176830] [2020-02-10 23:08:21,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:08:21,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:08:21,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690020340] [2020-02-10 23:08:21,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:08:21,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:08:21,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:08:21,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:08:21,009 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:08:21,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 358 transitions. Second operand 9 states. [2020-02-10 23:08:21,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:08:21,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:08:21,010 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:09:05,996 INFO L129 PetriNetUnfolder]: 586/8968 cut-off events. [2020-02-10 23:09:05,997 INFO L130 PetriNetUnfolder]: For 916933/920838 co-relation queries the response was YES. [2020-02-10 23:09:06,225 INFO L76 FinitePrefix]: Finished finitePrefix Result has 92754 conditions, 8968 events. 586/8968 cut-off events. For 916933/920838 co-relation queries the response was YES. Maximal size of possible extension queue 1257. Compared 154305 event pairs. 10/8789 useless extension candidates. Maximal degree in co-relation 92545. Up to 1838 conditions per place. [2020-02-10 23:09:06,580 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 434 selfloop transitions, 124 changer transitions 1/573 dead transitions. [2020-02-10 23:09:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:09:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:09:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:09:06,582 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:09:06,582 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:09:06,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:09:06,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:09:06,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:09:06,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:09:06,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:09:06,584 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:09:06,584 INFO L178 Difference]: Start difference. First operand has 431 places, 358 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:09:06,589 INFO L206 Difference]: Finished difference. Result has 446 places, 410 transitions [2020-02-10 23:09:06,590 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=16242, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19481, PETRI_PLACES=446, PETRI_TRANSITIONS=410} [2020-02-10 23:09:06,590 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 446 places, 410 transitions [2020-02-10 23:09:32,974 INFO L129 PetriNetUnfolder]: 0/7186 cut-off events. [2020-02-10 23:09:32,975 INFO L130 PetriNetUnfolder]: For 792464/795579 co-relation queries the response was YES. [2020-02-10 23:09:33,142 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73978 conditions, 7186 events. 0/7186 cut-off events. For 792464/795579 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 129793 event pairs. 87/6826 useless extension candidates. Maximal degree in co-relation 73762. Up to 789 conditions per place. [2020-02-10 23:09:33,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 410 transitions [2020-02-10 23:09:33,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 446 places, 410 transitions [2020-02-10 23:09:33,398 INFO L479 AbstractCegarLoop]: Abstraction has has 446 places, 410 transitions [2020-02-10 23:09:33,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:09:41,398 INFO L129 PetriNetUnfolder]: 0/6408 cut-off events. [2020-02-10 23:09:41,399 INFO L130 PetriNetUnfolder]: For 786971/789393 co-relation queries the response was YES. [2020-02-10 23:09:41,399 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:09:41,399 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:09:41,399 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:09:41,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:09:41,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1365390500, now seen corresponding path program 32 times [2020-02-10 23:09:41,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:09:41,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448253811] [2020-02-10 23:09:41,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:09:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:09:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:09:41,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448253811] [2020-02-10 23:09:41,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:09:41,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:09:41,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133706574] [2020-02-10 23:09:41,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:09:41,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:09:41,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:09:41,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:09:41,692 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:09:41,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 410 transitions. Second operand 9 states. [2020-02-10 23:09:41,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:09:41,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:09:41,692 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:10:30,408 INFO L129 PetriNetUnfolder]: 575/8944 cut-off events. [2020-02-10 23:10:30,408 INFO L130 PetriNetUnfolder]: For 1025053/1029952 co-relation queries the response was YES. [2020-02-10 23:10:30,649 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99069 conditions, 8944 events. 575/8944 cut-off events. For 1025053/1029952 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 153895 event pairs. 15/8745 useless extension candidates. Maximal degree in co-relation 98852. Up to 1554 conditions per place. [2020-02-10 23:10:30,996 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 431 selfloop transitions, 195 changer transitions 2/642 dead transitions. [2020-02-10 23:10:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:10:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:10:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:10:30,997 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:10:30,997 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:10:30,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:10:30,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:10:30,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:10:30,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:10:30,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:10:30,999 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:10:30,999 INFO L178 Difference]: Start difference. First operand has 446 places, 410 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:10:31,005 INFO L206 Difference]: Finished difference. Result has 460 places, 477 transitions [2020-02-10 23:10:31,005 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=19481, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24037, PETRI_PLACES=460, PETRI_TRANSITIONS=477} [2020-02-10 23:10:31,006 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 460 places, 477 transitions [2020-02-10 23:11:02,160 INFO L129 PetriNetUnfolder]: 0/7653 cut-off events. [2020-02-10 23:11:02,160 INFO L130 PetriNetUnfolder]: For 906222/908977 co-relation queries the response was YES. [2020-02-10 23:11:02,353 INFO L76 FinitePrefix]: Finished finitePrefix Result has 80904 conditions, 7653 events. 0/7653 cut-off events. For 906222/908977 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 139877 event pairs. 104/7367 useless extension candidates. Maximal degree in co-relation 80681. Up to 836 conditions per place. [2020-02-10 23:11:02,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 460 places, 477 transitions [2020-02-10 23:11:02,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 477 transitions [2020-02-10 23:11:02,700 INFO L479 AbstractCegarLoop]: Abstraction has has 459 places, 477 transitions [2020-02-10 23:11:02,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:11:11,930 INFO L129 PetriNetUnfolder]: 0/6828 cut-off events. [2020-02-10 23:11:11,930 INFO L130 PetriNetUnfolder]: For 895112/897162 co-relation queries the response was YES. [2020-02-10 23:11:11,931 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:11:11,931 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:11:11,931 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:11:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:11:11,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1782496074, now seen corresponding path program 33 times [2020-02-10 23:11:11,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:11:11,931 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473433781] [2020-02-10 23:11:11,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:11:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:11:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:11:12,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473433781] [2020-02-10 23:11:12,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:11:12,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:11:12,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732447026] [2020-02-10 23:11:12,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:11:12,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:11:12,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:11:12,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:11:12,237 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:11:12,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 477 transitions. Second operand 9 states. [2020-02-10 23:11:12,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:11:12,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:11:12,238 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:12:34,881 INFO L129 PetriNetUnfolder]: 541/11743 cut-off events. [2020-02-10 23:12:34,881 INFO L130 PetriNetUnfolder]: For 1407893/1413117 co-relation queries the response was YES. [2020-02-10 23:12:35,298 INFO L76 FinitePrefix]: Finished finitePrefix Result has 130020 conditions, 11743 events. 541/11743 cut-off events. For 1407893/1413117 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 215425 event pairs. 15/11496 useless extension candidates. Maximal degree in co-relation 129796. Up to 2320 conditions per place. [2020-02-10 23:12:35,768 INFO L145 encePairwiseOnDemand]: 79/87 looper letters, 524 selfloop transitions, 198 changer transitions 0/736 dead transitions. [2020-02-10 23:12:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:12:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-02-10 23:12:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2020-02-10 23:12:35,770 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2020-02-10 23:12:35,770 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2020-02-10 23:12:35,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2020-02-10 23:12:35,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:12:35,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2020-02-10 23:12:35,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-02-10 23:12:35,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-02-10 23:12:35,772 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-02-10 23:12:35,773 INFO L178 Difference]: Start difference. First operand has 459 places, 477 transitions. Second operand 9 states and 674 transitions. [2020-02-10 23:12:35,781 INFO L206 Difference]: Finished difference. Result has 474 places, 563 transitions [2020-02-10 23:12:35,781 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=24037, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=29936, PETRI_PLACES=474, PETRI_TRANSITIONS=563} [2020-02-10 23:12:35,781 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 474 places, 563 transitions [2020-02-10 23:13:27,166 INFO L129 PetriNetUnfolder]: 0/10274 cut-off events. [2020-02-10 23:13:27,166 INFO L130 PetriNetUnfolder]: For 1304988/1307241 co-relation queries the response was YES. [2020-02-10 23:13:27,463 INFO L76 FinitePrefix]: Finished finitePrefix Result has 111875 conditions, 10274 events. 0/10274 cut-off events. For 1304988/1307241 co-relation queries the response was YES. Maximal size of possible extension queue 1587. Compared 195733 event pairs. 184/9965 useless extension candidates. Maximal degree in co-relation 111644. Up to 1117 conditions per place. [2020-02-10 23:13:27,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 474 places, 563 transitions [2020-02-10 23:13:27,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 474 places, 563 transitions [2020-02-10 23:13:27,853 INFO L479 AbstractCegarLoop]: Abstraction has has 474 places, 563 transitions [2020-02-10 23:13:27,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-02-10 23:13:43,999 INFO L129 PetriNetUnfolder]: 0/9169 cut-off events. [2020-02-10 23:13:43,999 INFO L130 PetriNetUnfolder]: For 1310569/1312921 co-relation queries the response was YES. [2020-02-10 23:13:43,999 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:13:43,999 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:13:43,999 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:13:43,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:13:44,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1772314514, now seen corresponding path program 34 times [2020-02-10 23:13:44,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:13:44,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190315587] [2020-02-10 23:13:44,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:13:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:13:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:13:44,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190315587] [2020-02-10 23:13:44,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:13:44,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-02-10 23:13:44,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958926259] [2020-02-10 23:13:44,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-02-10 23:13:44,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:13:44,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-02-10 23:13:44,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-02-10 23:13:44,436 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2020-02-10 23:13:44,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 563 transitions. Second operand 9 states. [2020-02-10 23:13:44,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:13:44,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2020-02-10 23:13:44,437 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-02-10 23:13:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-02-10 23:13:55,484 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-10 23:13:55,487 WARN L227 ceAbstractionStarter]: Timeout [2020-02-10 23:13:55,487 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:13:55 BasicIcfg [2020-02-10 23:13:55,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:13:55,489 INFO L168 Benchmark]: Toolchain (without parser) took 830363.03 ms. Allocated memory was 138.4 MB in the beginning and 3.5 GB in the end (delta: 3.4 GB). Free memory was 120.3 MB in the beginning and 1.1 GB in the end (delta: -991.5 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-02-10 23:13:55,489 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.48 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:13:55,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.51 ms. Allocated memory is still 138.4 MB. Free memory was 120.1 MB in the beginning and 118.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:13:55,490 INFO L168 Benchmark]: Boogie Preprocessor took 23.64 ms. Allocated memory is still 138.4 MB. Free memory was 118.3 MB in the beginning and 117.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:13:55,491 INFO L168 Benchmark]: RCFGBuilder took 370.67 ms. Allocated memory is still 138.4 MB. Free memory was 117.2 MB in the beginning and 104.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-02-10 23:13:55,491 INFO L168 Benchmark]: TraceAbstraction took 829925.58 ms. Allocated memory was 138.4 MB in the beginning and 3.5 GB in the end (delta: 3.4 GB). Free memory was 103.8 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-02-10 23:13:55,493 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.48 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.51 ms. Allocated memory is still 138.4 MB. Free memory was 120.1 MB in the beginning and 118.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.64 ms. Allocated memory is still 138.4 MB. Free memory was 118.3 MB in the beginning and 117.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.67 ms. Allocated memory is still 138.4 MB. Free memory was 117.2 MB in the beginning and 104.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 829925.58 ms. Allocated memory was 138.4 MB in the beginning and 3.5 GB in the end (delta: 3.4 GB). Free memory was 103.8 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.3s, 51 ProgramPointsBefore, 44 ProgramPointsAfterwards, 71 TransitionsBefore, 64 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 336 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 357 CheckedPairsTotal, 7 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 27). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 71/87 universal loopers) in iteration 40,while PetriNetUnfolder was constructing finite prefix that currently has 41209 conditions, 2402 events (500/2401 cut-off events. For 748427/753791 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 39784 event pairs. 19/3984 useless extension candidates. Maximal degree in co-relation 40984. Up to 1070 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 829.7s, OverallIterations: 40, TraceHistogramMax: 1, AutomataDifference: 476.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 944 SDtfs, 939 SDslu, 783 SDs, 0 SdLazy, 1769 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred in iteration=39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 255.6s AutomataMinimizationTime, 39 MinimizatonAttempts, 23 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 880 NumberOfCodeBlocks, 880 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 840 ConstructedInterpolants, 0 QuantifiedInterpolants, 349650 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 40 InterpolantComputations, 40 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown